Replaces reload() and __builtin__ for Python 3.x

Uses "six.moves.reload_module" and "six.moves.builtins"

cloudbaseinit/tests/plugins/windows/test_extendvolumes.py

@@ -21,6 +21,7 @@ import sys
 import unittest
 
 from oslo.config import cfg
+from six import moves
 
 CONF = cfg.CONF
 
@@ -37,7 +38,7 @@ class ExtendVolumesPluginTests(unittest.TestCase):
         self._extend_volumes = extendvolumes.ExtendVolumesPlugin()
 
     def tearDown(self):
-        reload(sys)
+        moves.reload_module(sys)
 
     @mock.patch('cloudbaseinit.plugins.windows.extendvolumes'
                 '.ExtendVolumesPlugin._get_volume_index')

cloudbaseinit/tests/plugins/windows/test_userdatautils.py

@@ -18,6 +18,7 @@ import uuid
 import unittest
 
 from oslo.config import cfg
+from six import moves
 
 from cloudbaseinit.plugins.windows import userdatautils
 from cloudbaseinit.tests.metadata import fake_json_response
@@ -32,7 +33,7 @@ class UserDataUtilsTest(unittest.TestCase):
             '2013-04-04')
 
     def tearDown(self):
-        reload(uuid)
+        moves.reload_module(uuid)
 
     @mock.patch('re.search')
     @mock.patch('tempfile.gettempdir')

cloudbaseinit/tests/plugins/windows/test_winrmcertificateauth.py

@@ -19,6 +19,8 @@ import mock
 import sys
 import unittest
 
+from six import moves
+
 from cloudbaseinit.plugins import base
 from cloudbaseinit.plugins import constants
 
@@ -41,7 +43,7 @@ class ConfigWinRMCertificateAuthPluginTests(unittest.TestCase):
         self._certif_auth = self.winrmcert.ConfigWinRMCertificateAuthPlugin()
 
     def tearDown(self):
-        reload(sys)
+        moves.reload_module(sys)
 
     def _test_get_credentials(self, fake_user, fake_password):
         mock_shared_data = mock.MagicMock()

cloudbaseinit/tests/plugins/windows/userdataplugins/test_heat.py

@@ -45,7 +45,7 @@ class HeatUserDataHandlerTests(unittest.TestCase):
                       mock_execute_user_data_script, filename):
         mock_part = mock.MagicMock()
         mock_part.get_filename.return_value = filename
-        with mock.patch('__builtin__.open', mock.mock_open(),
+        with mock.patch('six.moves.builtins.open', mock.mock_open(),
                         create=True) as handle:
             response = self._heat.process(mock_part)
             handle().write.assert_called_once_with(mock_part.get_payload())

cloudbaseinit/tests/test_init.py

@@ -15,10 +15,11 @@
 #    under the License.
 
 import mock
-import unittest
 import sys
+import unittest
 
 from oslo.config import cfg
+from six import moves
 
 from cloudbaseinit import init
 from cloudbaseinit.plugins import base
@@ -44,8 +45,8 @@ class InitManagerTest(unittest.TestCase):
         self._init = init.InitManager()
 
     def tearDown(self):
-        reload(sys)
-        reload(init)
+        moves.reload_module(sys)
+        moves.reload_module(init)
 
     def _test_get_plugin_section(self, instance_id):
         response = self._init._get_plugins_section(instance_id=instance_id)