Update postgresql_user resource to allow different helpers
Geo uses it's own subclass of BasePgHelper
- Default to PgHelper, but allow user to provide a helper
- Remove protected status from service_name and service_cmd methods
Closes #2348 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Geo uses it's own subclass of BasePgHelper
Closes #2348 (closed)