Combination of cluster name and node name can be too long for `munged`

[ocaisa]

Nov 20 13:35:42 aarch64-neoverse-n1-node1.int.azure-almalinux93-202411-mc-14-1-2 munged[1478]: munged: Error: Failed to determine hostname: File name too long

[cmd-ntrf]

It's an issue with munge 0.5.13. It's been reported here:
dun/munge#140

The limit of characters for hostname is 64 because of a fixed size buffer. Upgrading to 0.5.14 would fix it. However, we currently fetch munge from EPEL so we do not have the freedom of upgrading. I'll look at the options.

[cmd-ntrf]

Since RHEL 8, munge is in appstream repo instead of being provided by EPEL, but they are still at 0.5.13.
https://pkgs.org/search/?q=munge

[cmd-ntrf]

We intend to stop using munge for authentication and instead use Slurm auth plugin using jwt in Magic Castle 16.