Download & install an upgrade from the CDRouter Support Lounge
        using your Support Lounge email & password. Please note that any
        running tests will be stopped.

        :param email: CDRouter Support Lounge email as a string.
        :param password: CDRouter Support Lounge password as a string.
        :param release_id: Release ID as an int.
        :return: :class:`system.Upgrade <system.Upgrade>` object
        :rtype: system.Upgrade

def lounge_upgrade(self, email, password, release_id):
        """Download & install an upgrade from the CDRouter Support Lounge
        using your Support Lounge email & password. Please note that any
        running tests will be stopped.

        :param email: CDRouter Support Lounge email as a string.
        :param password: CDRouter Support Lounge password as a string.
        :param release_id: Release ID as an int.
        :return: :class:`system.Upgrade <system.Upgrade>` object
        :rtype: system.Upgrade
        """
        schema = UpgradeSchema()
        resp = self.service.post(self.base+'lounge/upgrade/',
                                 json={'email': email, 'password': password, 'release': {'id': int(release_id)}})
        return self.service.decode(schema, resp)