/opt/azurehpc/slurm/prolog.sh assume that jq is installed, while it's not always the case

[xpillons]

the Slurmctld prolog script is using jq which is not a default OS package. jq package need to be added in the install script run on the scheduler.

@aditigaur4

[aditigaur4]

This has been fixed in : https://github.com/Azure/cyclecloud-slurm/pull/234