correct postgresql installation ansible

Former-commit-id: 26432a367c9bf07d370e976f00942e100c7e4dde

ansible/deploy.yaml

@@ -54,8 +54,9 @@
         state: present
       become: true
     - name: Initiate database
-      command: service postgresql initdb
-      creates=/var/lib/pgsql/data/postgresql.conf
+      command: service postgresql initdb 
+      args:
+        creates: /var/lib/pgsql/data/postgresql.conf
     - name: Start PostgreSQL and enable at boot
       service: name=postgresql
                enabled=yes