oidc: fix OpenID Connect scope option

There is a missmatch between the option being defined in the
OpenIDConnectPassword loader and the OidcPassword class. The loader
defines it as "openid-scope" but the OidcPassword constructor only
accepts "scope".

Closes-Bug: 1594272
Change-Id: I7dbaaa4eb52c900bcd19da4c274bd35dc8b98c6f

keystoneauth1/loading/_plugins/identity/v3.py

@@ -111,6 +111,7 @@ class OpenIDConnectPassword(_OpenIDConnectBase):
             loading.Opt('username', help='Username'),
             loading.Opt('password', secret=True, help='Password'),
             loading.Opt('openid-scope', default="profile",
+                        dest='scope',
                         help='OpenID Connect scope that is requested from OP')
         ])
 

keystoneauth1/tests/unit/loading/test_v3.py

@@ -150,6 +150,8 @@ class OpenIDConnectPasswordTests(OpenIDConnectBaseTests, utils.TestCase):
             set(['username', 'password', 'openid-scope']).issubset(
                 set([o.name for o in options]))
         )
+        # openid-scope gets renamed into "scope"
+        self.assertIn('scope', [o.dest for o in options])
 
     def test_basic(self):
         access_token_endpoint = uuid.uuid4().hex