Called when clock drift token changes.

    Args:
      response: string, the metadata response with the new drift token value.

def HandleClockSync(self, response):
    """Called when clock drift token changes.

    Args:
      response: string, the metadata response with the new drift token value.
    """
    self.logger.info('Clock drift token has changed: %s.', response)
    self.distro_utils.HandleClockSync(self.logger)