Comment 9 for bug 1843931

Aha, I wonder if this is the thing I was complaining about in https://bugs.launchpad.net/oslo.policy/+bug/1742569/comments/3 when I said "I'm surprised if it doesn't result in cycles when using the sample policy, because if the new policy is not specified but the deprecated one is the IIUC it is supposed to fall back to the deprecated one from the file... which points to the new one."