Updated openstack/openstack
Project: openstack/neutron  56e0c3117c9fdb95b831c1e83e07d0fdd6dc5d13

Drop RpcProxy usage from cisco.l3

Drop usage of the RpcProxy compatibility class from cisco.l3.  This
was the last of RpcProxy usage in the cisco plugin.  The equivalent
APIs from oslo.messaging are now used instead.

Part of blueprint drop-rpc-compat.

Change-Id: I340b6969e32ec20cb4864021ec332eb9c5bdf19c