Cloned from launchpad blueprint https://blueprints.launchpad.net/python-keystoneclient/+spec/auth-plugin-serialize. Description: Auth plugins need to be able to be serialized to basic python objects and reloadable. This will be needed for storing in a database or for transmitting via RPC between different parts of a service (eg, n-api transmits the token to the other n- services). Specification URL (additional information): None