Add test: stub for testing of cleanup

1 job for delete_old_users in 1 minute and 54 seconds
Status Job ID Name Coverage
  Test
failed #2340
test

00:01:54

 
Name Stage Failure
failed
test Test
failures:
tests::check_cleanup

test result: FAILED. 11 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out

error: test failed, to rerun pass '--bin medal'
make: *** [Makefile:14: stricttest] Error 101
Cleaning up file based variables
ERROR: Job failed: exit code 1