Add tests to cover auto_allocated_topology

This patch set adds tests to cver the neutron auto allocated topology API [0].
Part of "Increase Neutron RBAC Coverage" initiative [1]

[0] https://developer.openstack.org/api-ref/network/v2/index.html#id877
[1] https://storyboard.openstack.org/#!/story/2002641

Change-Id: I2341be8aa8c9057069dff24dfe718b6239e68817
Story: 2002641
Task: 22325
diff --git a/patrole_tempest_plugin/tests/api/network/test_auto_allocated_topology_rbac.py b/patrole_tempest_plugin/tests/api/network/test_auto_allocated_topology_rbac.py
new file mode 100644
index 0000000..bcf62d7
--- /dev/null
+++ b/patrole_tempest_plugin/tests/api/network/test_auto_allocated_topology_rbac.py
@@ -0,0 +1,44 @@
+# Copyright 2018 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.common import utils
+from tempest.lib import decorators
+
+from patrole_tempest_plugin import rbac_rule_validation
+from patrole_tempest_plugin.tests.api.network import rbac_base as base
+
+
+class AutoAllocationTopologyPluginRbacTest(base.BaseNetworkPluginRbacTest):
+
+    @classmethod
+    def skip_checks(cls):
+        super(AutoAllocationTopologyPluginRbacTest, cls).skip_checks()
+        if not utils.is_extension_enabled('auto-allocated-topology',
+                                          'network'):
+            msg = "auto-allocated-topology extension not enabled."
+            raise cls.skipException(msg)
+
+    @decorators.idempotent_id('299CB831-F6B2-49CA-882B-E9A8E36945A2')
+    @rbac_rule_validation.action(service="neutron",
+                                 rules=["get_auto_allocated_topology"],
+                                 expected_error_codes=[404])
+    def test_show_auto_allocated_topology(self):
+        """Show auto_allocated_topology.
+
+        RBAC test for the neutron "get_auto_allocated_topology" policy
+        """
+        with self.rbac_utils.override_role(self):
+            self.ntp_client.get_auto_allocated_topology(
+                tenant_id=self.os_primary.credentials.tenant_id)