Bug 1219922 - Stop using the refdata test fixture
Bug 1219922 - Stop using the refdata test fixture

I haven't found the exact reason why the tests were failing but it must
be a test isolation problem because they were passing individually.
I debugged this issue disabling the tests backwards starting from the
first failure and I found out that test_bz_api_process was the offender.
The test itself is not doing anything wrong but the refdata fixture
used to setup the test seems to be the root cause..
I replaced the two method calls with their orm counterpart and the
problem disappeared.

gbrmachado/treeherder,avih/treeherder,kapy2010/treeherder,gbrmachado/treeherder,KWierso/treeherder,tojon/treeherder,kapy2010/treeherder,tojon/treeherder,edmorley/treeherder,tojonmz/treeherder,tojonmz/treeherder,tojonmz/treeherder,sylvestre/treeherder,kapy2010/treeherder,sylvestre/treeherder,parkouss/treeherder,sylvestre/treeherder,sylvestre/treeherder,sylvestre/treeherder,glenn124f/treeherder,gbrmachado/treeherder,edmorley/treeherder,tojonmz/treeherder,glenn124f/treeherder,KWierso/treeherder,sylvestre/treeherder,parkouss/treeherder,gbrmachado/treeherder,wlach/treeherder,avih/treeherder,edmorley/treeherder,tojon/treeherder,akhileshpillai/treeherder,tojonmz/treeherder,wlach/treeherder,avih/treeherder,avih/treeherder,akhileshpillai/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,avih/treeherder,wlach/treeherder,glenn124f/treeherder,tojon/treeherder,KWierso/treeherder,glenn124f/treeherder,akhileshpillai/treeherder,glenn124f/treeherder,tojonmz/treeherder,wlach/treeherder,kapy2010/treeherder,edmorley/treeherder,gbrmachado/treeherder,parkouss/treeherder,parkouss/treeherder,wlach/treeherder,wlach/treeherder,avih/treeherder,parkouss/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,KWierso/treeherder,parkouss/treeherder,kapy2010/treeherder,glenn124f/treeherder