Some updates to rgw config like zone or zonegroup changes that can
be done during bootstrap process require rgw restart.
Add restart job which when enabled will use
'kubectl rollout restart deployment'
in order to restart rgw
This will be more useful in greenfield scenarios where
we need to setup zone/zonegroups right after rgw svc up which
needs to restart rgw svc.
Change-Id: I6667237e92a8b87a06d2a59c65210c482f3b7302
70b0b9b266