tests: extend scm cycle breaking tests
tests: extend scm cycle breaking tests

Add a test with file ref dependency, which is actually checks that the
files are removed and put.

Signed-off-by: Pavel Begunkov <8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com>
Link: https://lore.kernel.org/r/bf406c7d141b46f1fa94e72b9ba853dd72f27561.1650186365.git.8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing