Fix status_timeout incorrectly referencing self

After commit fbf40fdf status_timeout is not an class method anymore
and so it can't reference self.
To properly report test failure it needs to call TestCase.fail so
this change adds that argument and changes all usages appropriately.

Change-Id: Icab49794c8c52340e850d7574f633c99452ca7be
Merge "Fix status_timeout incorrectly referencing self"