NDT should respect .down flags on a service

[nullivex]

Currently it will start scripts that shouldnt even be started.

[nullivex]

Tony [6:00 PM]
the standard for daemontools is existence only in /service/omXXX/dt/down and/or /service/omXXX/dt/log/down
sometimes I down both if its not coming back a while
rolled new grub standard around