03aafcb49c
Inspired by tulip, have every module define a __all__ list and import * from the top-level module. Rename transport.set_defaults() since we don't want this to be a top-level set_defaults() function as there may be multiple. Also, rather than configuring flake8 to allow star imports, just exclude the __init__.py files from flake8 checks.
Oslo Messaging Library
The Oslo messaging API supports RPC and notifications over a number of different messsaging transports.