make postgres more tunable

inventory/ghp/sample/group_vars/all/all.yaml

@@ -37,6 +37,8 @@ dns_namespace: dns
 # Shared infrastructure #
 ## PostgreSQL ##
 postgres_enabled: true
+postgres_operator_enabled: true
+postgres_operator_ui_enabled: true
 postgres_db_namespace: "{{ namespace }}"
 
 ## OpenLDAP ##