adds wait time for postgres setup as a variable

installer/roles/kubernetes/defaults/main.yml

@@ -42,3 +42,5 @@ openshift_pg_pvc_name: postgresql
 kubernetes_deployment_name: awx
 
 kubernetes_deployment_replica_size: 1
+
+postgress_activate_wait: 60

installer/roles/kubernetes/tasks/main.yml

@@ -103,7 +103,7 @@
 
 - name: Wait for Postgres to activate
   pause:
-    seconds: 60
+    seconds: "{{ postgress_activate_wait }}"
   when: openshift_pg_activate.changed or kubernetes_pg_activate.changed
 
 - name: Set image names if using custom registry