webadmin : Hide 'Sync Mom Policy' action  in gluster only mode

Hiding the action 'Sync Mom Policy' in Hosts sub tab under Cluster Tab
when engine is running in Gluster only mode.

Change-Id: I91d3a3dfc71d1779b646c74379f4410145304b0d
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1019570
Signed-off-by: Ramesh Nachimuthu <rnachimu@redhat.com>