Stateless support for horizon.

Enable /etc/horizon/local_settings.d/*.py configuration files

roles/os-horizon/handlers/main.yml

@@ -15,3 +15,6 @@
 
   - name: restart nginx
     service: name=nginx enabled=yes state=restarted
+
+  - name: restart horizon
+    service: name=uwsgi@horizon enabled=yes state=restarted

roles/os-horizon/tasks/configure_horizon.yml

@@ -0,0 +1,21 @@
+---
+# Copyright (c) 2016 Intel Corporation
+#
+# 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.
+
+  - name: Create configuration files directory
+    file: path=/etc/horizon/local_settings.d state=directory owner=httpd mode=550
+
+  - name: Create configuration file
+    template: src=10_host.py.j2 dest=/etc/horizon/local_settings.d/10_host.py owner=httpd mode=550
+    notify: restart horizon

roles/os-horizon/tasks/main.yml

@@ -15,6 +15,8 @@
 
   - include: install.yml
 
+  - include: configure_horizon.yml
+
   - name: Start horizon
     service: name={{ item }} enabled=yes state=started
     with_items:

roles/os-horizon/templates/10_host.py.j2

@@ -0,0 +1,5 @@
+OPENSTACK_HOST = "{{ groups['openstack_identity'][0] }}"
+OPENSTACK_KEYSTONE_URL = "{{keystone_protocol}}://%s:{{keystone_public_port}}/v3" % OPENSTACK_HOST
+{% if keystone_ssl %}
+OPENSTACK_SSL_NO_VERIFY = True
+{% endif %}