Execute the actions necessary to cleanup the instances and returns
        None.

        :return: None

def execute(self):
        """
        Execute the actions necessary to cleanup the instances and returns
        None.

        :return: None
        """
        self.print_info()

        if not self._config.provisioner.playbooks.cleanup:
            msg = 'Skipping, cleanup playbook not configured.'
            LOG.warn(msg)
            return

        self._config.provisioner.cleanup()