rgw: add cluster name option to the handler
rgw: add cluster name option to the handler

If the cluster name is different than 'ceph', the command will fail so
we need to pass the cluster name.

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

font/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible,font/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible