Set the user_visibility to False of GW ports

Closes-bug: #1376757
(cherry picked from commit ceba32269dea6b21b7ecf41f348baf804b8f2556)

Conflicts:

	src/config/svc-monitor/svc_monitor/instance_manager.py
Change-Id: I108971213670dfd00bdf20386c7c6225b07bc000