Improve unit tests for python-quantumclient
Improve unit tests for python-quantumclient

Partially fixes bug 1137783. Add tests for:
quantumclient.common.utils

Partially Fixes: bug #1137783

Change-Id: I6491eb881d3f465d11a649d55cde7caba77ed19b

asadoughi/python-neutronclient,CiscoSystems/python-quantumclient,ntt-sic/python-neutronclient,JioCloud/python-neutronclient,CiscoSystems/python-quantumclient,JioCloud/python-neutronclient,citrix-openstack-build/python-neutronclient,venusource/python-neutronclient,rackerlabs/rackspace-python-neutronclient,yamahata/python-tackerclient,noironetworks/python-neutronclient,openstack/python-neutronclient,varunarya10/python-neutronclient,vijayendrabvs/ssl-python-neutronclient,Stavitsky/python-neutronclient,cryptickp/python-neutronclient,openstack/python-neutronclient,huntxu/python-neutronclient,yamahata/python-tackerclient,CiscoSystems/python-neutronclient,varunarya10/python-neutronclient,huntxu/python-neutronclient,rackerlabs/rackspace-python-neutronclient,eayunstack/python-neutronclient,noironetworks/python-neutronclient,NeCTAR-RC/python-neutronclient,asadoughi/python-neutronclient,CiscoSystems/python-neutronclient,vichoward/python-neutronclient,johnpbatty/python-neutronclient,Juniper/python-neutronclient,sajuptpm/python-neutronclient-ipam,johnpbatty/python-neutronclient,roaet/python-neutronclient,cernops/python-neutronclient,vichoward/python-neutronclient,citrix-openstack-build/python-neutronclient,Juniper/python-neutronclient,NeCTAR-RC/python-neutronclient,sajuptpm/python-neutronclient-ipam,roaet/python-neutronclient,cryptickp/python-neutronclient,eayunstack/python-neutronclient,mangelajo/python-neutronclient,ntt-sic/python-neutronclient,cernops/python-neutronclient,Stavitsky/python-neutronclient,mangelajo/python-neutronclient,venusource/python-neutronclient,vijayendrabvs/ssl-python-neutronclient