Return a clone of this retry manager

def copy(self):
        """Return a clone of this retry manager"""
        return Retry(max_tries=self.max_tries, delay=self.delay, backoff=self.backoff,
                     max_jitter=self.max_jitter / 100.0, max_delay=self.max_delay, sleep_func=self.sleep_func,
                     deadline=self.deadline, retry_exceptions=self.retry_exceptions)