Add error handling to smoke test cleanup.

 * DefaultClientSmokeTest.tearDownClass was previously calling
   delete() on test resources without error handling.  Since the
   intent of the method is to remove test resources, a NotFound
   exception indicating that the resource has already been
   removed can safely be ignored.

Change-Id: Idd289d2f3ce4133c49b0c882304d6ad6695a7396
1 file changed