Use safe_load and safe_dump for all yaml calls

Author: xvello

config/kube_config.py

@@ -493,7 +493,7 @@ def get_with_name(self, name, safe=False):
 def _get_kube_config_loader_for_yaml_file(filename, **kwargs):
     with open(filename) as f:
         return KubeConfigLoader(
-            config_dict=yaml.load(f),
+            config_dict=yaml.safe_load(f),
             config_base_path=os.path.abspath(os.path.dirname(filename)),
             **kwargs)
 

config/kube_config_test.py

@@ -896,14 +896,14 @@ def test_ssl_with_relative_ssl_files(self):
     def test_load_kube_config(self):
         expected = FakeConfig(host=TEST_HOST,
                               token=BEARER_TOKEN_FORMAT % TEST_DATA_BASE64)
-        config_file = self._create_temp_file(yaml.dump(self.TEST_KUBE_CONFIG))
+        config_file = self._create_temp_file(yaml.safe_dump(self.TEST_KUBE_CONFIG))
         actual = FakeConfig()
         load_kube_config(config_file=config_file, context="simple_token",
                          client_configuration=actual)
         self.assertEqual(expected, actual)
 
     def test_list_kube_config_contexts(self):
-        config_file = self._create_temp_file(yaml.dump(self.TEST_KUBE_CONFIG))
+        config_file = self._create_temp_file(yaml.safe_dump(self.TEST_KUBE_CONFIG))
         contexts, active_context = list_kube_config_contexts(
             config_file=config_file)
         self.assertDictEqual(self.TEST_KUBE_CONFIG['contexts'][0],
@@ -916,7 +916,7 @@ def test_list_kube_config_contexts(self):
                                   contexts)
 
     def test_new_client_from_config(self):
-        config_file = self._create_temp_file(yaml.dump(self.TEST_KUBE_CONFIG))
+        config_file = self._create_temp_file(yaml.safe_dump(self.TEST_KUBE_CONFIG))
         client = new_client_from_config(
             config_file=config_file, context="simple_token")
         self.assertEqual(TEST_HOST, client.configuration.host)