This introduces oslo.messaging variables that define the RPC and
Notify transports for the OpenStack services. These parameters replace
the rabbitmq values and are used to generate the messaging
transport_url for the service. The association of the messaging
backend server to the oslo.messaging services will then be transparent
to the octavia service.
This patch:
* Add oslo.messaging variable for RPC and Notify to defaults
* Update transport_url generation
* Add oslo.messaging to tests inventory
* Update tests
* Add release note
Change-Id: Ibfd9b5325bf89414439a1a516d1bbde0896904b5
1ee708ffb6