We are having a hard time keeping track of which operations
correspond to which request. This patch adds the ability to track
operations in the notifier with the message_id of the notification
being processed. This message_id (which is generated by oslo is
a uuid
For the server, we could also set the message_id to the request_id
of the python-requests object received, but this is already
logged as part of the server logs.
Change-Id: Ie8b885a2b5cba6684e92c49eed4a99d24621402e
ade787b90c