Add OpenStack Client Config module

All of the ansible OpenStack modules are driven by a clouds.yaml config
file which is processed by os-client-config. Expose the data returned by
that library to enable playbooks to iterate over available clouds.

cloud/openstack/os_client_config.py

@@ -0,0 +1,70 @@
+#!/usr/bin/python
+
+# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
+#
+# This module is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this software.  If not, see <http://www.gnu.org/licenses/>.
+
+import os_client_config
+from os_client_config import exceptions
+
+DOCUMENTATION = '''
+---
+module: os_client_config
+short_description: Get OpenStack Client config
+description:
+  - Get I(openstack) client config data from clouds.yaml or environment
+options:
+   regions:
+     description:
+        - Include regions in the returned data
+     required: false
+     default: 'yes'
+version_added: "2.0"
+requirements: [ os-client-config ]
+author: Monty Taylor
+'''
+
+EXAMPLES = '''
+# Inject facts about OpenStack clouds
+- os-client-config
+'''
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict(
+            regions = dict(default=True, required=False, type='bool'),
+            action  = dict(default='list', choices=['list']),
+        ),
+    )
+    p = module.params
+
+    try:
+        config = os_client_config.OpenStackConfig()
+        clouds = {}
+        for cloud in config.get_all_clouds():
+            if p['regions']:
+                cloud_region = clouds.get(cloud.name, {})
+                cloud_region[cloud.region] = cloud.config
+                clouds[cloud.name] = cloud_region
+            else:
+                clouds[cloud.name] = cloud.config
+        module.exit_json(clouds=clouds)
+    except exceptions.OpenStackConfigException as e:
+        module.fail_json(msg=str(e)) 
+
+# import module snippets
+from ansible.module_utils.basic import *
+
+main()