sktm test_init.py check_pending

[dzickusrh]

In test_init.py::test_wait_for_pending_done has a check_pending Mock() call that sets a return value, which is unneeded as that fails with Exceptions.

It would also be nice to mimic that a little better.
Adding: self.watcher_obj.pj = [(1, 2, 3)]

makes it correctly hang. Is there an easy way to Mock removal of those 'pj' ids? Such that 60 seconds later, check_pending succeeds? (mocking turning sleep from 60 seconds to 1 second would be nice too).