Add support for using OIDC tokens via the Docker CLI

data/users/federated.py

@@ -23,6 +23,10 @@ class FederatedUsers(object):
   def federated_service(self):
     return self._federated_service
 
+  @property
+  def supports_encrypted_credentials(self):
+    return True
+
   def get_user(self, username_or_email):
     """ Retrieves the user with the given username or email, returning a tuple containing
         a UserInformation (if success) and the error message (on failure).