Cinder tests - Volume Extensions

Adds volume extensions RBAC test

Implements bp: initial-tests-volume
Co-Authored-By: Rick Bartra <rb560u@att.com>

Change-Id: I932a34fb3051007d57fd04c820f43f1fdd46a985
diff --git a/patrole_tempest_plugin/tests/api/volume/test_extensions_rbac.py b/patrole_tempest_plugin/tests/api/volume/test_extensions_rbac.py
new file mode 100644
index 0000000..a0ff55f
--- /dev/null
+++ b/patrole_tempest_plugin/tests/api/volume/test_extensions_rbac.py
@@ -0,0 +1,41 @@
+# Copyright 2017 AT&T Corporation.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest import config
+from tempest.lib import decorators
+
+from patrole_tempest_plugin import rbac_rule_validation
+from patrole_tempest_plugin.rbac_utils import rbac_utils
+from patrole_tempest_plugin.tests.api.volume import rbac_base
+
+CONF = config.CONF
+
+
+class ExtensionsRbacTest(rbac_base.BaseVolumeRbacTest):
+
+    def tearDown(self):
+        rbac_utils.switch_role(self, switchToRbacRole=False)
+        super(ExtensionsRbacTest, self).tearDown()
+
+    @rbac_rule_validation.action(service="cinder",
+                                 rule="volume:list_extensions")
+    @decorators.idempotent_id('7f2dcc41-e850-493f-a400-82db4e2b50c0')
+    def test_list_extensions(self):
+        rbac_utils.switch_role(self, switchToRbacRole=True)
+        self.volumes_extension_client.list_extensions()
+
+
+class ExtensionsV3RbacTest(ExtensionsRbacTest):
+    _api_version = 3