Mark outdated dirservers in reasonably live consensuses
If we have a reasonably live consensus, then most of our dirservers should still be caching all the microdescriptors in it.
Reasonably live consensuses are up to a day old. But microdescriptors expire 7 days after the last consensus that referenced them.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information