Refactor setting defaults for some scope parameters

The code is setting defaults for some scope parameters, cheking if the
name ends with some specific substring (namely ending in "password")
causing failures in some plugins that end with the same string, but do
not allow those parameters (like "user_domain_id" in "v3oidcpassword").

Closes-Bug: #1582774
Change-Id: Id7036db3b783b135353d035dc4c1df7c808d6474

openstackclient/api/auth.py

@@ -105,10 +105,12 @@ def select_auth_plugin(options):
 
 def build_auth_params(auth_plugin_name, cmd_options):
 
-    auth_params = dict(cmd_options.auth)
     if auth_plugin_name:
         LOG.debug('auth_type: %s', auth_plugin_name)
         auth_plugin_loader = base.get_plugin_loader(auth_plugin_name)
+        auth_params = {opt.dest: opt.default
+                       for opt in base.get_plugin_options(auth_plugin_name)}
+        auth_params.update(dict(cmd_options.auth))
         # grab tenant from project for v2.0 API compatibility
         if auth_plugin_name.startswith("v2"):
             if 'project_id' in auth_params:
@@ -121,6 +123,7 @@ def build_auth_params(auth_plugin_name, cmd_options):
         LOG.debug('no auth_type')
         # delay the plugin choice, grab every option
         auth_plugin_loader = None
+        auth_params = dict(cmd_options.auth)
         plugin_options = set([o.replace('-', '_') for o in get_options_list()])
         for option in plugin_options:
             LOG.debug('fetching option %s', option)

openstackclient/api/auth_plugin.py

@@ -38,7 +38,7 @@ class TokenEndpoint(token_endpoint.AdminToken):
     is for bootstrapping the Keystone database.
     """
 
-    def load_from_options(self, url, token):
+    def load_from_options(self, url, token, **kwargs):
         """A plugin for static authentication with an existing token
 
         :param string url: Service endpoint