Base for keystone tempest plugin

This patch adds the basic files and configs in order to enable the
keystone tempest plugin interface using tempest-plugin-cookiecutter.
Since we are adding them inside keystone's repository, they can be
installed alongside keystone and to run the tests (when we have one)
we simply use `testr run keystone_tempest_plugin` in tempest.

For more details about the tempest plugin interface see [1]

[1] http://docs.openstack.org/developer/tempest/plugin.html

Change-Id: Ia42e79246251e8af1010aa8eaf462aacf75644a7
Partially-Implements: bp keystone-tempest-plugin-tests
diff --git a/keystone_tempest_plugin/config.py b/keystone_tempest_plugin/config.py
new file mode 100644
index 0000000..aaebcfb
--- /dev/null
+++ b/keystone_tempest_plugin/config.py
@@ -0,0 +1,28 @@
+# Copyright 2016 Red Hat, Inc.
+# 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 oslo_config import cfg
+
+
+identity_group = cfg.OptGroup(name='identity',
+                              title="Keystone Configuration Options")
+
+IdentityGroup = []
+
+identity_feature_group = cfg.OptGroup(name='identity-feature-enabled',
+                                      title='Enabled Identity Features')
+
+IdentityFeatureGroup = []