bug 1527345: fix handling of "test" crash ids
bug 1527345: fix handling of "test" crash ids

The collector will sometimes toss a "test" crash id in the queue to make
sure that it can publish to the queue. The processor needs to consume
those by acking them and then throwing them away. This fixes that.

lonnen/socorro,mozilla/socorro,mozilla/socorro,mozilla/socorro,mozilla/socorro,mozilla/socorro,lonnen/socorro,mozilla/socorro,lonnen/socorro,lonnen/socorro