Make none auth usable in CLI

Closes-Bug: #1724283
Change-Id: I3e477895ba0c989ffd0c91c45791e9f74173a3d6

keystoneauth1/loading/_plugins/noauth.py

@@ -17,11 +17,12 @@ from keystoneauth1 import noauth
 class NoAuth(loading.BaseLoader):
     """Use no tokens to perform requests.
 
-    This must be used together with adapter.Adapter.endpoint_override
-    to instantiate clients for services deployed in noauth/standalone mode.
+    This can be used to instantiate clients for services deployed in
+    noauth/standalone mode.
 
     There is no fetching a service catalog or determining scope information
-    and so it cannot be used by clients that expect use this scope information.
+    and so it cannot be used by clients that expect to use this scope
+    information.
 
     """
 
@@ -30,4 +31,11 @@ class NoAuth(loading.BaseLoader):
         return noauth.NoAuth
 
     def get_options(self):
-        return []
+        options = super(NoAuth, self).get_options()
+
+        options.extend([
+            loading.Opt('endpoint',
+                        help='The endpoint that will always be used'),
+        ])
+
+        return options

keystoneauth1/noauth.py

@@ -20,5 +20,18 @@ class NoAuth(plugin.BaseAuthPlugin):
     that might be deployed in standalone/noauth mode.
     """
 
-    def get_token(self, session):
+    def __init__(self, endpoint=None):
+        super(NoAuth, self).__init__()
+        self.endpoint = endpoint
+
+    def get_token(self, session, **kwargs):
         return 'notused'
+
+    def get_endpoint(self, session, **kwargs):
+        """Return the supplied endpoint.
+
+        Using this plugin the same endpoint is returned regardless of the
+        parameters passed to the plugin. endpoint_override overrides the
+        endpoint specified when constructing the plugin.
+        """
+        return kwargs.get('endpoint_override') or self.endpoint

keystoneauth1/tests/unit/test_noauth.py

@@ -34,4 +34,15 @@ class NoAuthTest(utils.TestCase):
         self.assertIsNone(a.get_endpoint(s))
 
     def test_noauth_options(self):
-        self.assertEqual([], loader.NoAuth().get_options())
+        opts = loader.NoAuth().get_options()
+        self.assertEqual(['endpoint'], [o.name for o in opts])
+
+    def test_get_endpoint(self):
+        a = noauth.NoAuth(endpoint=self.TEST_URL)
+        s = session.Session(auth=a)
+        self.assertEqual(self.TEST_URL, a.get_endpoint(s))
+
+    def test_get_endpoint_with_override(self):
+        a = noauth.NoAuth(endpoint=self.TEST_URL)
+        s = session.Session(auth=a)
+        self.assertEqual('foo', a.get_endpoint(s, endpoint_override='foo'))