Remove `extras` from token data

In the Kilo release we opted to remove the `extras` field from
the token body in favor of well defined APIs. We can now remove
it as it has been 2 cycles.

implements bp: removed-as-of-mitaka

Change-Id: I612d3d0dbe35b858928f6f44f26af26cf690a897

keystone/tests/unit/token/test_fernet_provider.py

@@ -91,7 +91,6 @@ class TestValidate(unit.TestCase):
         token = token_data['token']
         self.assertIsInstance(token['audit_ids'], list)
         self.assertIsInstance(token['expires_at'], str)
-        self.assertEqual({}, token['extras'])
         self.assertIsInstance(token['issued_at'], str)
         self.assertEqual(method_names, token['methods'])
         exp_user_info = {

keystone/token/providers/common.py

@@ -14,7 +14,6 @@
 
 from oslo_config import cfg
 from oslo_log import log
-from oslo_log import versionutils
 from oslo_serialization import jsonutils
 import six
 from six.moves.urllib import parse
@@ -459,20 +458,11 @@ class V3TokenDataHelper(object):
             LOG.error(msg)
             raise exception.UnexpectedError(msg)
 
-    def get_token_data(self, user_id, method_names, extras=None,
-                       domain_id=None, project_id=None, expires=None,
-                       trust=None, token=None, include_catalog=True,
-                       bind=None, access_token=None, issued_at=None,
-                       audit_info=None):
-        if extras is None:
-            extras = {}
-        if extras:
-            versionutils.deprecated(
-                what='passing token data with "extras"',
-                as_of=versionutils.deprecated.KILO,
-                in_favor_of='well-defined APIs')(lambda: None)()
-        token_data = {'methods': method_names,
-                      'extras': extras}
+    def get_token_data(self, user_id, method_names, domain_id=None,
+                       project_id=None, expires=None, trust=None, token=None,
+                       include_catalog=True, bind=None, access_token=None,
+                       issued_at=None, audit_info=None):
+        token_data = {'methods': method_names}
 
         # We've probably already written these to the token
         if token:
@@ -573,7 +563,6 @@ class BaseProvider(provider.Provider):
         token_data = self.v3_token_data_helper.get_token_data(
             user_id,
             method_names,
-            auth_context.get('extras') if auth_context else None,
             domain_id=domain_id,
             project_id=project_id,
             expires=expires_at,