test_heatclient fix mocking with latest keystone
test_heatclient fix mocking with latest keystone

The tests break with latest (0.10.0) keystoneclient, so replace
the mocked domain with a MockAnything object

Change-Id: Icd460e554656e11ef8c4bcda62c1363b7eed8a68
Closes-Bug: #1347319

noironetworks/heat,pratikmallya/heat,cwolferh/heat-scratch,srznew/heat,cwolferh/heat-scratch,pshchelo/heat,openstack/heat,jasondunsmore/heat,miguelgrinberg/heat,gonzolino/heat,pshchelo/heat,rh-s/heat,srznew/heat,maestro-hybrid-cloud/heat,maestro-hybrid-cloud/heat,cryptickp/heat,redhat-openstack/heat,noironetworks/heat,rdo-management/heat,steveb/heat,rh-s/heat,cryptickp/heat,openstack/heat,dims/heat,miguelgrinberg/heat,steveb/heat,dragorosson/heat,jasondunsmore/heat,dragorosson/heat,gonzolino/heat,takeshineshiro/heat,rdo-management/heat,pratikmallya/heat,redhat-openstack/heat,takeshineshiro/heat,dims/heat