Updated openstack/openstack
Project: openstack/neutron  33c60c18cc78fb558ab8464c007559e44100ebba

Drop RpcProxy usage from MetadataPluginApi

Drop the usage of the RpcProxy compatibility class from
MetadataPluginApi.  The equivalent direct usage of oslo.messaging APIs
are used instead.

Part of blueprint drop-rpc-compat.

Change-Id: I1764dd715237bc76dae2789121850f69b8f82888