This also includes `from __future__ import absolute_import`
in every file so that the imports are consistent in Python 2 and 3.
The Python 2 tests fail without this.
We started using `events.scheduler` to plan fake events instead of internal
queue implemented by fedmsg-hub. Thanks to that, we can stop using fedmsg-hub
completely for local builds.
In this commit, the `scheduler.local.main` is rewritten to not use fedmsg-hub.
The original `scheduler.local.main` is still needed by test_build tests and
therefore it is moved there.
Message classes and FedmsgMessageParser are moved into dedicated Python module
under scheduler/ directory.
FedmsgMessageParser is decoupled from messaging.py by initializing a parser
object with known fedmsg services. This decouple avoids cycle import between
parser.py and messaging.py.
Signed-off-by: Chenxiong Qi <cqi@redhat.com>
