webadmin: hide gluster-swift tab for non-gluster hosts

'Gluster Swift' sub-tab under 'Hosts' will be visible only
if the select host belongs to gluster supported cluster.

Also made following version checks
- 'Cluster General-> Gluster Swift' visible if cluster version is >=3.3
- 'Gluster Hooks' sub-tab will be visible if cluster version is >=3.3
- 'Services' sub-tab will be visible if cluster version is >=3.2

Change-Id: Ied1cc8dc29bb62fa7fbd9378214a652d22627560
Signed-off-by: Kanagaraj M <kmayilsa@redhat.com>