Updated openstack/openstack
Project: openstack/neutron  e842d54a2a71c0107729cc492800791fdd201620

Drop RpcProxy usage from cisco apic ml2 plugin

Drop usage fo the RpcProxy compatibility class from the cisco apic ml2
plugin.  The equivalent oslo.messaging APIs are now used instead.

Part of blueprint drop-rpc-compat.

Change-Id: I415b65720a09652bae70fc1c1dada9f5727c4441