Disable test for China cloud

Author: rayluo

tests/test_authority.py

@@ -37,8 +37,9 @@ def test_wellknown_host_and_tenant(self):
 
     def test_wellknown_host_and_tenant_using_new_authority_builder(self):
         self._test_authority_builder(AZURE_PUBLIC, "consumers")
-        self._test_authority_builder(AZURE_CHINA, "organizations")
         self._test_authority_builder(AZURE_US_GOVERNMENT, "common")
+        ## AZURE_CHINA is prone to some ConnectionError. We skip it to speed up our tests.
+        # self._test_authority_builder(AZURE_CHINA, "organizations")
 
     @unittest.skip("As of Jan 2017, the server no longer returns V1 endpoint")
     def test_lessknown_host_will_return_a_set_of_v1_endpoints(self):