Stop attempting share type deletions that'd fail

You can't delete a share type that's in use
by shares. Add this logic to the cleanup script
handler so we stop seeing unnecessary cleanup
attempts. Failed cleanups are always, unfortunately,
the test runner's responsibility since we can't
understand why something failed to be deleted.

Change-Id: I1a5ae086b68f34f3761b61f7b4cfdcbf717ab1da
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>
1 file changed