Add FedoraBodhiResult convention for Bodhi results
This adds a new convention, `FedoraBodhiResult`, for results
associated with Fedora Bodhi updates. It's pretty simple for
now; we could go query a bunch of properties of the update from
Bodhi and include them in the extradata, but not sure we need
to do that yet. I based the values on some results that are
already present in dev resultsdb, like:
http://taskotron-dev.fedoraproject.org/resultsdb/results/10516367
Signed-off-by: Adam Williamson <awilliam@redhat.com>