Support using ~/.pyrax.cfg and multi environments

lib/ansible/module_utils/rax.py

@@ -2,16 +2,16 @@ import os
 
 
 def rax_argument_spec():
-    auth_endpoint = 'https://identity.api.rackspacecloud.com/v2.0/'
     return dict(
         api_key=dict(type='str', aliases=['password'], no_log=True),
-        auth_endpoint=dict(type='str', default=auth_endpoint),
+        auth_endpoint=dict(type='str'),
         credentials=dict(type='str', aliases=['creds_file']),
+        env=dict(type='str'),
         identity_type=dict(type='str', default='rackspace'),
         region=dict(type='str'),
         tenant_id=dict(type='str'),
         username=dict(type='str'),
-        verify_ssl=dict(choices=BOOLEANS, default=True, type='bool'),
+        verify_ssl=dict(choices=BOOLEANS, type='bool'),
     )
 
 
@@ -23,24 +23,35 @@ def setup_rax_module(module, rax_module):
     api_key = module.params.get('api_key')
     auth_endpoint = module.params.get('auth_endpoint')
     credentials = module.params.get('credentials')
+    env = module.params.get('env')
     identity_type = module.params.get('identity_type')
     region = module.params.get('region')
     tenant_id = module.params.get('tenant_id')
     username = module.params.get('username')
     verify_ssl = module.params.get('verify_ssl')
 
+    if env is not None:
+        rax_module.set_environment(env)
+
     rax_module.set_setting('identity_type', identity_type)
-    rax_module.set_setting('verify_ssl', verify_ssl)
+    if verify_ssl is not None:
-    rax_module.set_setting('auth_endpoint', auth_endpoint)
+        rax_module.set_setting('verify_ssl', verify_ssl)
-    if tenant_id:
+    if auth_endpoint is not None:
+        rax_module.set_setting('auth_endpoint', auth_endpoint)
+    if tenant_id is not None:
         rax_module.set_setting('tenant_id', tenant_id)
 
     try:
         username = username or os.environ.get('RAX_USERNAME')
-        api_key = api_key or os.environ.get('RAX_API_KEY')
+        if not username:
+            username = rax_module.get_setting('keyring_username')
+            api_key = 'USE_KEYRING'
+        if not api_key:
+            api_key = os.environ.get('RAX_API_KEY')
         credentials = (credentials or os.environ.get('RAX_CREDENTIALS') or
                        os.environ.get('RAX_CREDS_FILE'))
-        region = region or os.environ.get('RAX_REGION')
+        region = (region or os.environ.get('RAX_REGION') or
+                  rax_module.get_setting('region'))
     except KeyError, e:
         module.fail_json(msg='Unable to load %s' % e.message)