Updated openstack/openstack
Project: openstack/neutron  dc6bfa48d67d2326b45fff46850f52081049b270

Drop RpcProxy usage from MeteringAgentNotifyAPI

Remove usage of the RpcProxy compatibility class from
MeteringAgentNotifyAPI.  The equivalent oslo.messaging APIs are now
used instead.

Part of blueprint drop-rpc-compat.

Change-Id: I6c1fddb6694f74021b9f6a54885657916bda2875