FetchUselessDescriptors, or something, should make us fetch old-style descriptors too
In the past, "FetchUselessDescriptors 1" was what you wrote in your torrc if you want your Tor client to keep fetching directory stuff even when it doesn't see local socks requests. That's how we configure the Tor clients for the bwauths, the torstatus installs, etc.
With the switch to "usemicrodescriptors 1", we seem to not be fetching old-style consensus and descriptors, even when FetchUselessDescriptors is set. This behavior confuses all the scripts.
We should pick how we want to have users tell us to "fetch everything, even when you think you don't need it", and make it work.