Add setting to not install packages

If you are installing Salt via git/pip, the formula will try to overwrite your
install with packaged versions. This setting makes it possible to avoid that.

pillar.example

   # and up as it'll wipe out important files that Salt relies on.
   clean_config_d_dir: False
 
+  # Set this to False to not have the formula install packages (in the case you
+  # install Salt via git/pip/etc.)
+  install_packages: True
+
   # to overwrite map.jinja salt packages
   lookup:
     salt-master: 'salt-master'

salt/api.sls

   - salt.master
 
 salt-api:
+{% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_api }}
+{% endif %}
   service.running:
     - name: {{ salt_settings.api_service }}
     - require:

salt/cloud.sls

     - require:
       - pkg: python-pip
 
+{% if salt_settings.install_packages %}
 salt-cloud:
   pkg.installed:
     - name: {{ salt_settings.salt_cloud }}
       {% if grains['os_family'] not in ['Debian', 'RedHat'] %}
       - pip: crypto
       {% endif %}
+{% endif %}
 
 {% for folder in salt_settings.cloud.folders %}
 {{ folder }}:

salt/defaults.yaml

 salt:
+  install_packages: True
   config_path: /etc/salt
   minion_service: salt-minion
   master_service: salt-master

salt/master.sls

 {% from "salt/map.jinja" import salt_settings with context %}
 
 salt-master:
+{% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_master }}
+{% endif %}
   file.recurse:
     - name: {{ salt_settings.config_path }}/master.d
     - template: jinja
     - enable: True
     - name: {{ salt_settings.master_service }}
     - watch:
+{% if salt_settings.install_packages %}
       - pkg: salt-master
+{% endif %}
       - file: salt-master

salt/minion.sls

 {% from "salt/map.jinja" import salt_settings with context %}
 
 salt-minion:
+{% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_minion }}
+{% endif %}
   file.recurse:
     - name: {{ salt_settings.config_path }}/minion.d
     - template: jinja
     - enable: True
     - name: {{ salt_settings.minion_service }}
     - watch:
+{% if salt_settings.install_packages %}
       - pkg: salt-minion
+{% endif %}
       - file: salt-minion

salt/ssh.sls

 {% from "salt/map.jinja" import salt_settings with context %}
 
+{% if salt_settings.install_packages %}
 ensure salt-ssh is installed:
   pkg.installed:
     - name: {{ salt_settings.salt_ssh }}
+{% endif %}
 
 ensure roster config:
   file.managed:
     - source: salt://salt/files/roster.jinja
     - template: jinja
     - require:
+{% if salt_settings.install_packages %}
       - pkg: ensure salt-ssh is installed
+{% endif %}

salt/standalone.sls

 {% from "salt/map.jinja" import salt_settings with context %}
 
 salt-minion:
+{% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_minion }}
+{% endif %}
   file.recurse:
     - name: {{ salt_settings.config_path }}/minion.d
     - template: jinja
     - enable: False
     - name: {{ salt_settings.minion_service }}
     - require:
+{% if salt_settings.install_packages %}
       - pkg: salt-minion
+{% endif %}
       - file: salt-minion

salt/syndic.sls

   - salt.master
 
 salt-syndic:
+{% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_syndic }}
+{% endif %}
   service:
     - running
     - require:
       - service: {{ salt_settings.syndic_service }}
     - watch:
+{% if salt_settings.install_packages %}
       - pkg: salt-master
+{% endif %}
       - file: {{ salt_settings.config_path }}/master