Updated openstack/openstack
Project: openstack/neutron  d14318ac047eeea12de5a20c59864291d3a0b830

Drop RpcProxy usage from VPNaaS code

Drop the usage of the RpcProxy compatibility class from the VPNaaS
code.  The equivalent direct usage of oslo.messaging APIs is now used
instead.

Part of blueprint drop-rpc-compat.

Change-Id: I4ff0bfe0b5e909bfe088f4059d85aa6366526dad