... so we can actually catch the boot loader menu from IPMI on the first try.
Resolving privatestorage/privatestorageops#329 .

Re-importing the path probably breaks other stuff.  Anyway, we only have one
overlay now so this short/simpler thing works.

I don't know

When it changes we often have to rebuild ghc ... :(

Also configure a new value on the staging grid

This removes the code that might delete a Tahoe-LAFS nodedir and replaces it
with code that will try to save an unexpected copy of it out of the way
instead.

And test for (kind of) SSH availability

This gives us a good opportunity to mention the privacy policy, too.