autopush disable for negative karma fires repeatedly #5944
Description
I noticed an interesting pattern on this update. I initially filed negative karma because it failed tests. That caused autopush to be disabled (which is correct). Then the dep issue was cleared up, so I re-enabled autopush. I left my negative karma, though, because AFAIK there is no way to reset to neutral karma, and I couldn't leave positive karma as I had not independently tested the update.
Then somebody else left positive karma...and bodhi disabled autopush again, apparently because of my initial negative karma.
We probably shouldn't re-disable autopush for the same piece of negative karma if it's already been disabled and re-enabled once.
Since we do this with a message trigger (IIRC), perhaps we should only consider the karma that triggered the re-evaluation, not all karma on the update?