Support for upstream postgresql.org zypp repo after PR review

pillar.example

@@ -1,19 +1,20 @@
 postgres:
-  # Set True to configure upstream postgresql.org repository for YUM or APT
+  # UPSTREAM REPO
+  # Set True to configure upstream postgresql.org repository for YUM/APT/ZYPP
   use_upstream_repo: False
-  # Version to install from upstream repository
-  version: '9.3'
+  # Version to install from upstream repository (if upstream_repo: True)
+  version: '9.6'
 
-  # These are Debian/Ubuntu specific package names
-  pkg: 'postgresql-9.3'
-  pkg_client: 'postgresql-client-9.3'
-
-  # Additional packages to install with PostgreSQL server,
-  # this should be in a list format
+  # PACKAGE
+  # These pillars are typically never required.
+  # pkg: 'postgresql'
+  # pkg_client: 'postgresql-client'
+  # service: postgresql
   pkgs_extra:
     - postgresql-contrib
     - postgresql-plpython
 
+  # POSTGRES
   # Append the lines under this item to your postgresql.conf file.
   # Pay attention to indent exactly with 4 spaces for all lines.
   postgresconf: |
@@ -48,9 +49,6 @@ postgres:
   config_backup: ".backup@{{ salt['status.time']('%y-%m-%d_%H:%M:%S') }}"
   {%- endif %}
 
-  # PostgreSQL service name
-  service: postgresql
-
   {%- if grains['init'] == 'unknown' %}
 
   # If Salt is unable to detect init system running in the scope of state run,