docs: add storageclass to complete-postgres-manifest example (#586)

manifests/complete-postgres-manifest.yaml

@@ -11,6 +11,7 @@ spec:
   teamId: "ACID"
   volume:
     size: 1Gi
+    #storageClass: my-sc
   numberOfInstances: 2
   users: #Application/Robot users
     zalando:
@@ -46,13 +47,13 @@ spec:
     pg_hba:
     - hostssl all all 0.0.0.0/0 md5
     - host    all all 0.0.0.0/0 md5
-    slots:
-      permanent_physical_1:
-        type: physical
-      permanent_logical_1:
-        type: logical
-        database: foo
-        plugin: pgoutput
+    #slots:
+    #  permanent_physical_1:
+    #    type: physical
+    #  permanent_logical_1:
+    #    type: logical
+    #    database: foo
+    #    plugin: pgoutput
     ttl: 30
     loop_wait: &loop_wait 10
     retry_timeout: 10