To fix sanity issue for test_vm_with_sec_group, issue was creating security group through vncapi does not set display name, get through neutron was only based on dispay name, added sg_obj.name as well

Closes-Bug: #1385541

Change-Id: I44649f22a1582eecb9d58882f53fb13b205d6aa4
(cherry picked from commit 7ed4bb0c230e3577192a5c3a92fe3fd8b01bbcf2)