Add --os-cloud support

This adds a new option --os-cloud that allows the configuration values
for multiple clouds to be stored in a local file and selected with
a single option.

Internal option names have had 'os_' removed to be comptible with
the options returned from OpenStackConfig().get_one_cloud().

The config file is ~/.config/openstack/clouds.yaml:

Sample
------
clouds:
  devstack:
    auth:
      auth_url: http://192.168.122.10:35357/
      project_name: demo
      username: demo
      password: 0penstack
    region_name: RegionOne
  devstack:
     auth:
       auth_url: http://192.168.122.10:35357/
       project_name: demo
       username: demo
       password: 0penstack
     region_name: RegionOne

Co-Authored-By: Monty Taylor <mordred@inaugust.com>
Change-Id: I4939acf8067e44ffe06a2e26fc28f1adf8985b7d
Depends-On: I45e2550af58aee616ca168d20a557077beeab007

1 files changed, 8 insertions, 0 deletions

diff --git a/examples/common.py b/examples/common.py
index 2e798529..3b31f582 100755
--- a/examples/common.py
+++ b/examples/common.py
@@ -85,8 +85,16 @@ def base_parser(parser):
 
     # Global arguments
     parser.add_argument(
+        '--os-cloud',
+        metavar='<cloud-config-name>',
+        dest='cloud',
+        default=env('OS_CLOUD'),
+        help='Cloud name in clouds.yaml (Env: OS_CLOUD)',
+    )
+    parser.add_argument(
         '--os-region-name',
         metavar='<auth-region-name>',
+        dest='region_name',
         default=env('OS_REGION_NAME'),
         help='Authentication region name (Env: OS_REGION_NAME)',
     )