Comment 2 for bug 1209364

This line is the cause.

https://github.com/openstack/python-neutronclient/blob/master/neutronclient/neutron/v2_0/__init__.py#L38

IMO, the code itself looks good, but nova unit test should change the way to mock neutron client.

so The nova UT change should be before neutron client change.
I would like to revert 33187.