Updated openstack/openstack
Project: openstack/neutron  4a59ac229b25287ee7b5f86d893df3a120510b32

Drop RpcProxy usage from metering_agent

Drop one more use of the RpcProxy compatibility class in favor of
direct use of oslo.messaging APIs.

Part of blueprint drop-rpc-compat.

Change-Id: I3c68aa246d88447f793aa9890f10f5043a41338d