Fix stable/grizzly gating for Neutron (aka Quantum)
Fix stable/grizzly gating for Neutron (aka Quantum)

The quantum-debug commands would result in:
'ClientManager' object has no attribute 'quantum'

Fixes bug: #1234550

Change-Id: I7f5551c724cfe6d75855eee3433b66bb5ce9b1a4

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