In case when openvswitch was restarted, full sync of all bridges will
be always triggered by neutron-ovs-agent so there is no need to check
in same rpc_loop iteration if bridges were recreated.
Conflicts:
neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py
Change-Id: I3cc1f1b7dc480d54a7cee369e4638f9fd597c759
Related-bug: #1864822
(cherry picked from commit 45482e300a)
(cherry picked from commit b8e7886d8b)