[Shutdown] Add sudo NOPASSWD permission to pcluster-admin to run killall command

[hehe7318]

Description of changes

• Add sudo NOPASSWD permission to pcluster-admin to run killall command, fix the below error:

2025-03-24 19:52:57,641 - [slurm_plugin.computemgtd:_self_terminate] - INFO - Killing slurm processes
sudo: a terminal is required to read the password; either use the -S option to read from standard input or configure an askpass helper
sudo: a password is required
2025-03-24 19:52:57,649 - [common.utils:_run_command] - ERROR - Command '['sudo', 'killall', '-9', '--quiet', 'slurmd', 'slurmstepd']' returned non-zero exit status 1.2025-03-24 19:52:57,649 - [slurm_plugin.computemgtd:wrapper] - ERROR - Failed when self terminating compute instance with exception CalledProcessError, message: Command '['sudo', 'killall', '-9', '--quiet', 'slurmd', 'slurmstepd']' returned non-zero exit status 1.

Tests

• Manually test:

1. Increase slurmdtimeout to 10000s.
2. SSH into a normal static node, add sudo NOPASSWD permission to pcluster-admin to run killall command in /etc/sudoers.d/sudo99-parallelcluster-slurm
3. Load custom node package in PR: [Shutdown] Kill slurmd and slurmstepd before shutting aws-parallelcluster-node#656
4. In headnode submit kill network job: sbatch -w q1-st-cr1-1 -a 1-1 --exclusive --no-requeue --wrap='sudo ifconfig ens5 down && sleep 600'
5. Expected to see node shutdown after 10 mins timeout and enter DOWN state in 20 mins.

References

• [Shutdown] Kill slurmd and slurmstepd before shutting aws-parallelcluster-node#656

Checklist

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