Rename setting to add_profile, add an example to explain it

pillar.example

@@ -8,6 +8,9 @@ postgres:
   use_upstream_repo: False
   # Version to install from upstream repository (if upstream_repo: True)
   version: '10'
+  # Set True to add a file in /etc/profile.d adding the bin dir in $PATH
+  # as packages from upstream put them somewhere like /usr/pgsql-10/bin
+  add_profile: False
   # If automatic package installation fails, use `fromrepo` to specify the
   # upstream repo to install packages from [#133, #185] (if upstream_repo: True)
   fromrepo: 'jessie-pgdg'

postgres/defaults.yaml

@@ -2,7 +2,7 @@
 
 postgres:
   use_upstream_repo: True
-  add_path: False # add bin_dir to $PATH, if installed from repos
+  add_profile: False # add bin_dir to $PATH, if installed from repos
   version: '10'
   pkg: postgresql
   pkgs_extra: []

postgres/upstream.sls

@@ -5,7 +5,7 @@
 
   {%- if postgres.use_upstream_repo == true -%}
 
-    {%- if postgres.add_path -%}
+    {%- if postgres.add_profile -%}
 postgresql-profile:
   file.managed:
     - name: /etc/profile.d/postgres.sh