fix: revert to using `is mapping` in Jinja2

* CVE-2021-25283 enables Jinja2 safe mode, which breaks use of
  `'dict' in x.__class__.__name__` workaround
* Workaround no longer needed as CentOS 6 is EOL

salt/files/master.d/f_defaults.conf

   {%- for key in pillar -%}
     {%- if pillar[key] is string %}
   - {{ key }}: {{ pillar[key] }}
-    {#- Workaround for missing `is mapping` on CentOS 6, see #193: #}
-    {%- elif pillar[key] is iterable and 'dict' not in pillar[key].__class__.__name__ %}
+    {%- elif pillar[key] is iterable and pillar[key] is not mapping %}
   - {{ key }}:
       {%- for parameter in pillar[key] %}
         {%- if parameter is iterable and parameter is not string %}
     - {{ parameter }}
         {%- endif %}
       {%- endfor -%}
-    {#- Workaround for missing `is mapping` on CentOS 6, see #193: #}
-    {%- elif 'dict' in pillar[key].__class__.__name__ and pillar[key] is not string %}
+    {%- elif pillar[key] is mapping and pillar[key] is not string %}
   - {{ key }}: 
       {%- for parameter in pillar[key] %}
       {{ parameter }}: {{pillar[key][parameter]}}

salt/files/master.d/lxc_profiles.conf

 {%- for prof in cfg_prof %}
   {{ prof }}:
 {%- for conf in cfg_prof[prof] %}
-{#- Workaround for missing `is mapping` on CentOS 6, see #193 #}
-{%-   if 'dict' in cfg_prof[prof][conf].__class__.__name__ %}
+{%-   if cfg_prof[prof][conf] is mapping %}
     {{ conf }}:
 {%-      for opt in cfg_prof[prof][conf] %}
       {{ opt }}: {{ cfg_prof[prof][conf][opt] }}
 {%- for prof in cfg_net %}
   {{ prof }}:
 {%- for conf in cfg_net[prof] -%}
-{#- Workaround for missing `is mapping` on CentOS 6, see #193 #}
-{%-  if 'dict' in cfg_net[prof][conf].__class__.__name__ %}
+{%-   if cfg_prof[prof][conf] is mapping %}
     {{ conf }}:
 {%-      for opt in cfg_net[prof][conf] %}
       {{ opt }}: {{ cfg_net[prof][conf][opt] }}

salt/files/minion.d/f_defaults.conf

   {%- for key in pillar -%}
     {%- if pillar[key] is string %}
   - {{ key }}: {{ pillar[key] }}
-    {#- Workaround for missing `is mapping` on CentOS 6, see #193: #}
-    {%- elif pillar[key] is iterable and 'dict' not in pillar[key].__class__.__name__ %}
+    {%- elif pillar[key] is iterable and pillar[key] is not mapping %}
   - {{ key }}:
       {%- for parameter in pillar[key] %}
         {%- if parameter is iterable and parameter is not string %}
     - {{ parameter }}
         {%- endif %}
       {%- endfor -%}
-    {#- Workaround for missing `is mapping` on CentOS 6, see #193: #}
-    {%- elif 'dict' in pillar[key].__class__.__name__ and pillar[key] is not string %}
+    {%- elif pillar[key] is mapping and pillar[key] is not string %}
   - {{ key }}:
       {%- for parameter in pillar[key] %}
       {{ parameter }}: {{pillar[key][parameter]}}

test/integration/v3000-py2/files/_mapdata/ubuntu-16.yaml

     key_url: https://repo.saltstack.com/apt/ubuntu/16.04/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py2/files/_mapdata/ubuntu-18.yaml

     key_url: https://repo.saltstack.com/apt/ubuntu/18.04/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/amazonlinux-2.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/amazon/2/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/centos-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/centos-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/debian-10.yaml

     key_url: https://repo.saltstack.com/py3/debian/10/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/debian-9.yaml

     key_url: https://repo.saltstack.com/py3/debian/9/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/gentoo-2-sysd.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/gentoo-2-sysv.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/opensuse-15.yaml

     install_packages: true
     key_url: https://download.opensuse.org/repositories/systemsmanagement:/saltstack/openSUSE_Leap_15.2/repodata/repomd.xml.key
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/oraclelinux-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/oraclelinux-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/ubuntu-16.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/16.04/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/ubuntu-18.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/18.04/amd64/3000/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3000-py3/files/_mapdata/windows-2019-server.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - "/srv/salt"

test/integration/v3000-py3/files/_mapdata/windows-8.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - "/srv/salt"

test/integration/v3001-py3/files/_mapdata/amazonlinux-2.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/amazon/2/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/centos-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/centos-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/debian-10.yaml

     key_url: https://repo.saltstack.com/py3/debian/10/amd64/3001/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/debian-9.yaml

     key_url: https://repo.saltstack.com/py3/debian/9/amd64/3001/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/fedora-32.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/fedora-33.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/gentoo-2-sysd.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/gentoo-2-sysv.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/opensuse-15.yaml

     install_packages: true
     key_url: https://download.opensuse.org/repositories/systemsmanagement:/saltstack/openSUSE_Leap_15.2/repodata/repomd.xml.key
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/opensuse-tumbleweed.yaml

     install_packages: true
     key_url: https://download.opensuse.org/repositories/systemsmanagement:/saltstack/openSUSE_Tumbleweed/repodata/repomd.xml.key
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/oraclelinux-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/oraclelinux-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/ubuntu-16.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/16.04/amd64/3001/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/ubuntu-18.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/18.04/amd64/3001/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3001-py3/files/_mapdata/ubuntu-20.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/20.04/amd64/3001/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/amazonlinux-2.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/amazon/2/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/centos-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/centos-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/debian-10.yaml

     key_url: https://repo.saltstack.com/py3/debian/10/amd64/3002/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/debian-9.yaml

     key_url: https://repo.saltstack.com/py3/debian/9/amd64/3002/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/fedora-32.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/fedora-33.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/gentoo-2-sysd.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/gentoo-2-sysv.yaml

         version: 0.23.0
     install_packages: true
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/opensuse-15.yaml

     install_packages: true
     key_url: https://download.opensuse.org/repositories/systemsmanagement:/saltstack/openSUSE_Leap_15.2/repodata/repomd.xml.key
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/opensuse-tumbleweed.yaml

     install_packages: true
     key_url: https://download.opensuse.org/repositories/systemsmanagement:/saltstack/openSUSE_Tumbleweed/repodata/repomd.xml.key
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/oraclelinux-7.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/oraclelinux-8.yaml

     install_packages: true
     key_url: https://repo.saltstack.com/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/ubuntu-16.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/16.04/amd64/3002/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/ubuntu-18.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/18.04/amd64/3002/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/integration/v3002-py3/files/_mapdata/ubuntu-20.yaml

     key_url: https://repo.saltstack.com/py3/ubuntu/20.04/amd64/3002/SALTSTACK-GPG-KEY.pub
     libgit2: libgit2-22
     master:
+      ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
       file_roots:
         base:
         - /srv/salt

test/salt/pillar/salt.sls

     pillar_roots:
       base:
         - /srv/pillar
+    ext_pillar:
+      - cmd_yaml: cat /etc/salt/yaml
+      - stack:
+          - /path/to/stack1.cfg
+          - /path/to/stack2.cfg
+      - reclass:
+          inventory_base_uri: /etc/reclass
   minion:
     master: localhost
     fileserver_backend: