Rewriting of slurm.yaml files to match new UL HPC SLURM configurations

The master document, in some way: https://hpc.uni.lu/download/slides/2020-ULHPC-user-guide.pdf

The partitions can stay as they are, but the qos need to be adjusted accordingly 😞 The rules with a walltime > 02-00:00:00 will need to be moved to qos: long. What is yet a bit unclear to me, is how many long jobs can be launched per user. According to the master document, it would be only a single one 😱

A quick look revealed assembly_lr_canu to be the only affected rule - at least in the master branch.