Add configuration for packages version

salt/master.sls

@@ -4,6 +4,9 @@ salt-master:
 {% if salt_settings.install_packages %}
   pkg.installed:
     - name: {{ salt_settings.salt_master }}
+  {%- if salt_settings.version is defined %}
+    - version: {{ salt_settings.version }}
+  {%- endif %}
 {% endif %}
   file.recurse:
     - name: {{ salt_settings.config_path }}/master.d