Add compute API test for config_drive policy action.

Added compute API test for testing config_drive policy action [0].

[0] https://github.com/openstack/nova/blob/master/nova/policies/config_drive.py

Change-Id: I4a5051ee06f1b3453e9138d20643b83c789c005c
Partially-Implements: blueprint blueprint initial-tests-compute
diff --git a/patrole_tempest_plugin/tests/api/compute/test_config_drive_rbac.py b/patrole_tempest_plugin/tests/api/compute/test_config_drive_rbac.py
new file mode 100644
index 0000000..ed4edfd
--- /dev/null
+++ b/patrole_tempest_plugin/tests/api/compute/test_config_drive_rbac.py
@@ -0,0 +1,53 @@
+#    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.lib import decorators
+from tempest import test
+
+from patrole_tempest_plugin import rbac_rule_validation
+from patrole_tempest_plugin.rbac_utils import rbac_utils
+from patrole_tempest_plugin.tests.api.compute import rbac_base
+
+
+class ConfigDriveRbacTest(rbac_base.BaseV2ComputeRbacTest):
+
+    @classmethod
+    def setup_clients(cls):
+        super(ConfigDriveRbacTest, cls).setup_clients()
+        cls.client = cls.servers_client
+
+    @classmethod
+    def skip_checks(cls):
+        super(ConfigDriveRbacTest, cls).skip_checks()
+        if not test.is_extension_enabled('os-config-drive', 'compute'):
+            msg = "%s skipped as os-config-drive extension not enabled." \
+                  % cls.__name__
+            raise cls.skipException(msg)
+
+    def tearDown(self):
+        rbac_utils.switch_role(self, switchToRbacRole=False)
+        super(ConfigDriveRbacTest, self).tearDown()
+
+    @decorators.idempotent_id('55c62ef7-b72b-4970-acc6-05b0a4316e5d')
+    @rbac_rule_validation.action(
+        service="nova",
+        rule="os_compute_api:os-config-drive")
+    def test_create_test_server_with_config_drive(self):
+        rbac_utils.switch_role(self, switchToRbacRole=True)
+        # NOTE(felipemonteiro): This policy action is always enforced,
+        # regardless whether the config_drive flag is set to true or false.
+        # However, it has been explicitly set to true below, in case that this
+        # behavior ever changes in the future.
+        self.create_test_server(config_drive=True)