Added some UTs to test_tlds.py
Added some UTs to test_tlds.py

Change-Id: I855192607bb33f38f7006c12d9c87725ff7c58cc

ionrock/designate,openstack/designate,ramsateesh/designate,cneill/designate-testing,ramsateesh/designate,cneill/designate-testing,tonyli71/designate,openstack/designate,muraliselva10/designate,muraliselva10/designate,ionrock/designate,grahamhayes/designate,tonyli71/designate,grahamhayes/designate,grahamhayes/designate,ionrock/designate,ramsateesh/designate,muraliselva10/designate,cneill/designate-testing,openstack/designate,tonyli71/designate