Switch Trove to use OSLO Messaging.

This is a blueprint being submitted for the existing change to switch
Trove to use OSLO messaging.

Change-Id: If78ed011e7ef146428f2d380bb8831d8da3ab7d5
co-authored-by: Flavio Percoco <fpercoco@redhat.com>
co-authored-by: Sergey Gotliv <sgotliv@redhat.com>
Implements: blueprint rpc-versioning
Merge "Switch Trove to use OSLO Messaging."