Ceph: fix start/stop/restart for radosgw Service

Puppet calls /sbin/start 'radosgw id=radosgw', which of course fails.
Puppet also doesn't seem to support actions to services. Change to
custom start/stop/restart...

Change-Id: Ie91d93f93febc6e4b45479481358a1eb23dc60c1
Merge "Ceph: fix start/stop/restart for radosgw Service" into production