Make compatible with Cliff (1.5.2)
Make compatible with Cliff (1.5.2)

The most recent version of cliff changes the way formatters work.  This
temporarily disables the custom formatter to get the gate working
again.

Partial-Bug: #1265926
Change-Id: Id0fe9ca3ddf0326a88055f8767de4cbe4cadb950

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