test/pybind: Test method has been renamed in unittest 3.2

Signed-off-by: Paulo E. Castro <[email protected]>

Author: pecastro

src/test/pybind/test_ceph_argparse.py

@@ -217,7 +217,7 @@ def test_debug(self):
     def test_pg_missing_args_output(self):
         ret, _, stderr = self._capture_output(['pg'], stderr=True)
         self.assertEqual({}, ret)
-        self.assertRegexpMatches(stderr, re.compile('no valid command found.* closest matches'))
+        self.assertRegex(stderr, re.compile('no valid command found.* closest matches'))
 
     def test_pg_wrong_arg_output(self):
         ret, _, stderr = self._capture_output(['pg', 'map', 'bad-pgid'],