Move installing postgresql-server into the postgresql section

roles/pagure/tasks/main.yml

@@ -7,7 +7,6 @@
   - pagure
   - python-psycopg2
   - libsemanage-python
-  - postgresql-server
   tags:
   - pagure
   - packages
@@ -91,6 +90,13 @@
 
 # Set-up PostgresQL
 
+- name: install needed packages
+  yum: pkg=postgresql-server state=present
+  tags:
+  - pagure
+  - postgresql
+  - packages
+
 - name: Initialize postgres if necessary
   command: /usr/bin/postgresql-setup initdb
            creates=/var/lib/pgsql/data