Add one more custom-query to each of the 3 long-running backends


The idea is to add a query that works all the time right after the job is started.
This is especially useful for for PBS and LSF where the job can be queued by the scheduler and other queries do not work yet; with this we get more/quicker feedback.

The 3 commits are independent.


I think `bpeek` is carried over from a copy and paste. The command looks like `ps -g <pid>` to me.