map.jinja: replace defaults.merge with grains.filter_by

openssh/defaults.yaml

-openssh:
-  sshd_enable: True
-  sshd_binary: /usr/sbin/sshd
-  sshd_config: /etc/ssh/sshd_config
-  sshd_config_src: salt://openssh/files/sshd_config
-  sshd_config_user: root
-  sshd_config_group: root
-  sshd_config_mode: '644'
-  sshd_config_backup: True
-  ssh_config: /etc/ssh/ssh_config
-  ssh_config_src: salt://openssh/files/ssh_config
-  ssh_config_user: root
-  ssh_config_group: root
-  ssh_config_mode: '644'
-  ssh_config_backup: True
-  banner: /etc/ssh/banner
-  banner_src: salt://openssh/files/banner
-  ssh_known_hosts: /etc/ssh/ssh_known_hosts
-  dig_pkg: dnsutils
-  ssh_moduli: /etc/ssh/moduli
-  root_group: root
-  # Prevent merge of array; always override values
-  host_key_algos: ecdsa,ed25519,rsa
-  # To manage/remove DSA:
-  #host_key_algos: dsa,ecdsa,ed25519,rsa
+default:
+  openssh:
+    sshd_enable: True
+    sshd_binary: /usr/sbin/sshd
+    sshd_config: /etc/ssh/sshd_config
+    sshd_config_src: salt://openssh/files/sshd_config
+    sshd_config_user: root
+    sshd_config_group: root
+    sshd_config_mode: '644'
+    sshd_config_backup: True
+    ssh_config: /etc/ssh/ssh_config
+    ssh_config_src: salt://openssh/files/ssh_config
+    ssh_config_user: root
+    ssh_config_group: root
+    ssh_config_mode: '644'
+    ssh_config_backup: True
+    banner: /etc/ssh/banner
+    banner_src: salt://openssh/files/banner
+    ssh_known_hosts: /etc/ssh/ssh_known_hosts
+    dig_pkg: dnsutils
+    ssh_moduli: /etc/ssh/moduli
+    root_group: root
+    # Prevent merge of array; always override values
+    host_key_algos: ecdsa,ed25519,rsa
+    # To manage/remove DSA:
+    #host_key_algos: dsa,ecdsa,ed25519,rsa
 
-sshd_config: {}
-ssh_config: {}
+  sshd_config: {}
+  ssh_config: {}

openssh/map.jinja

 # vim: ft=jinja
 
 {## Start imports as  ##}
-{% import_yaml 'openssh/defaults.yaml' as defaults %}
+{% import_yaml 'openssh/defaults.yaml' as default_settings %}
 {% import_yaml 'openssh/osfamilymap.yaml' as osfamilymap %}
 {% import_yaml 'openssh/osmap.yaml' as osmap %}
 {% import_yaml 'openssh/osfingermap.yaml' as osfingermap %}
 
-{## merge the osfamilymap ##}
-{% set osfamily = salt['grains.filter_by'](osfamilymap, grain='os_family') or {} %}
-{% do salt['defaults.merge'](defaults, osfamily) %}
-
-{## merge the osmap ##}
-{% set os = salt['grains.filter_by'](osmap, grain='os') or {} %}
-{% do salt['defaults.merge'](defaults, os) %}
-
-{## merge the osfingermap ##}
-{% set osfinger = salt['grains.filter_by'](osfingermap, grain='osfinger') or {} %}
-{% do salt['defaults.merge'](defaults, osfinger) %}
+{% set defaults = salt['grains.filter_by'](default_settings,
+    default='default',
+    merge=salt['grains.filter_by'](osfamilymap, grain='os_family',
+      merge=salt['grains.filter_by'](osmap, grain='os',
+        merge=salt['grains.filter_by'](osfingermap, grain='osfinger')
+      )
+    )
+) %}
 
 {## merge the openssh pillar ##}
 {% set openssh = salt['pillar.get']('openssh', default=defaults['openssh'], merge=True) %}