'Try to release a lock.
It does so by simply removing the lock key in Consul.
Arguments:
queue (str): The name of the queue we want to release
the lock from.'

def _release_lock(self, queue):

    logger.debug(u'Removing    lock    key    %s', self._lock_key(queue))
    self.client.kv.delete(key=self._lock_key(queue))
