Support array job in Slurm for trace capture

[A-Kokolis]

In Slurm job arrays are in the form _.
However, when running dyno gputrace the --job-id is not expected to be a string.
This results in an error:

dyno --hostname hostA gputrace --job-id 36199_0 --process-limit 8 --log-file <path to log> --iterations 1
error: Invalid value "36199_0" for '--job-id <JOB_ID>': invalid digit found in string

For more information try --help

The gputrace command works if we pass the raw jobID for the Slurm job instead, but it is easier to pass the array job id that is shown with sinfo in Slurm.

This issue is about adding this feature to support the array job when calling the dyno gputrace command.