Include the name of the failing subsubtest, should it fails.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191123191547.925360-1-chris@chris-wilson.co.uk