Updated openstack/openstack
Project: openstack/neutron  7186f5664df244a7840cb59210e60992459d8f7d

Apic drivers enhancements (second approach): Backend

- Move backend facing modules to a library

Implements blueprint: apic-driver-enhancements

Change-Id: Ia4553d3885ca1886ca6bc7ea5d96afeace5fc457