Let's make sure we aren't introducing new validation failures as
development proceeds. Basically, we record the current set of known
validation failures from the CTS, and for any validation failure we have
the layer log it and abort.
I had started encoding xfails from piglit, but it turns out that piglit
and the validation layer fight about the teardown process, producing
use-after-frees.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20756>
Emma Anholt