Updated openstack/openstack
Project: openstack/neutron  5042399d0787c31179dfbec0f7a9d43d1c9450d0

Apic drivers enhancements (second approach): Sync

    - Model synchronization

Implements blueprint: apic-driver-enhancements

Change-Id: I4264afe5c140c3576951c1a5a28a8d7666481147