Relax test condition

Newer versions of Python might complain about deprecated
functionality, unclosed filehandles, etc. We should fix
those too, but don't have them break this test.

Author: benmwebb

test/backend/test_deljob.py

@@ -136,7 +136,7 @@ def get_web_service(self, config):
             mod = DummyModule()
             sys.argv = ['testprogram'] + ['-f', 'FAILED', 'badjob']
             main(mod)
-            self.assertEqual(sio.getvalue(), 'Could not find job badjob\n')
+            self.assertIn('Could not find job badjob\n', sio.getvalue())
             self.assertEqual(mod.job_deleted, False)
 
             sio = StringIO()