fix python santiy check error

src/python/grpcio_tests/tests/unit/_auth_context_test.py

@@ -103,11 +103,12 @@ class AuthContextTest(unittest.TestCase):
         auth_data = pickle.loads(response)
         self.assertIsNone(auth_data[_ID])
         self.assertIsNone(auth_data[_ID_KEY])
-        self.assertDictEqual({
+        self.assertDictEqual(
-            'security_level': [b'TSI_PRIVACY_AND_INTEGRITY'],
+            {
-            'transport_security_type': [b'ssl'],
+                'security_level': [b'TSI_PRIVACY_AND_INTEGRITY'],
-            'ssl_session_reused': [b'false'],
+                'transport_security_type': [b'ssl'],
-        }, auth_data[_AUTH_CTX])
+                'ssl_session_reused': [b'false'],
+            }, auth_data[_AUTH_CTX])
 
     def testSecureClientCert(self):
         handler = grpc.method_handlers_generic_handler('test', {