Comment 13 for bug 1405057

Boden - thanks for picking this up, I had just noticed the same issue but you beat me to it:

WARNING neutron.api.extensions [req-1b8305d9-1be2-4ffd-b8b3-bfa3d84f81d2 - - - - -] Did not find expected name "Security_groups_port_filtering_lib" in /opt/stack/new/neutron/neutron/extensions/security_groups_port_filtering_lib.py

The name mis-match reminded me of other places that were fixed by moving to neutron-lib.