Comment 2 for bug 1088444

I think we might be well served by splitting the existing tests into categories, at least including "critical" and "non-critical" where critical indicates that we don't need to do anything with the image if it fails, and non-critical indicates we have an issue, but running other smoke testing is still worthwhile. At the same time, we can probably fix lp:1087743 by implementing a flag to avoid checking the image against the mirrors.