Comment 3 for bug 1562323

This is really a nova bug, and not a tempest bug. Tempest exposes the idempotent ids to enable tracking tests across renames. I don't feel that the fact nova's cell job (which should be using config flags instead of a giant regex anyway) isn't using this to identify tests in its blacklist is justification for a revert. There are multiple options here on the nova side to do this correctly, why does the fact this 1 job doesn't use them warrant a revert?