core : Domain of group is not shown in sub tab of users tab

Domain of groups added is not shown in general sub tab
of users tab

Change-Id: Id9aee2ad6491c6f9feee3fd3a92d68a20e8192da
Bug-Url: https://bugzilla.redhat.com/1087498
Signed-off-by: Ravi Nori <rnori@redhat.com>