ISUP or else they leave off at SHUTDOWN, which later confuses swapmod
(tbswap) which waits for them to reach ISUP, but of course they never
do. This is arguably a misfeature of os_setup, which should probably
not wait for nodes it didn't reboot, but I want to ponder that change.
Besides, doing this causes the nodes not to say SHUTDOWN in the web
interface.

Another change to add there (web interface) is to not say "possibly
down" for elabinelab nodes.