Hard-code in_tree=True for tests
Some integration tests use internal option ``force``. Re-add
``in_tree=True`` to make the tests pass until Pagure#8317 is fixed.
See: https://pagure.io/freeipa/issue/8317
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>