Expose SSH port for pam_slurm_adopt

[faganihajizada]

Summary

Add SSH port (22) to worker pod container specification to enable SSH access to Slurm worker nodes. This change allows users to SSH into worker pods where they have running jobs, working in conjunction with updated slurmd images that include pam_slurm_adopt for job-based access control.

Changes:

• Add SshPort constant (22) to worker container port definitions
• Expose SSH port (22) on worker pods alongside the existing slurmd port (6818)
• Add test coverage for SSH port validation in worker pod specifications

Related PR in containers repo: SlinkyProject/containers#6

Breaking Changes

N/A

Testing Notes

Built operator based on this branch and SlinkyProject/containers#6

srun -p <partition> -n1 --time=5:00 sleep 300 &

# 2. Find the worker node running the job
squeue -o "%.18i %.9P %.8j %.8u %.2t %.10M %.6D %R"

# 3. SSH from login node to worker node (should succeed)
ssh <worker-pod-hostname>

# 4. Verify you're on the worker node
hostname
ps aux | grep sleep

# 5. Cancel the job
scancel <job-id>

# 6. Try to SSH again (denied)
ssh <worker-pod-hostname>

Verified:

• SSH daemon starts alongside slurmd
• Unique SSH host keys generated per pod
• Users can SSH to nodes where they have running jobs
• Users cannot SSH to nodes without running jobs
• PAM configuration applied correctly