👌 IMPROVE: Avoid using `sed` to add `$HQ_CPUS`

[mbercx]

👌 IMPROVE: Avoid using `sed` to add `$HQ_CPUS`

[giovannipizzi]

Indeed - in addition, other computers might use mpirun instead of srun.
The --cpu-bind=... part should be part of the mpirun command when we setup the computer (once the issue of escaping is fixed).
Also, for now (see It4innovations/hyperqueue#243 (comment)) we should expect for now that we run only single-node jobs with HQ. When HQ will support it, we can change the plugin accordingly.

[giovannipizzi]

If my suggestion in this issue is accepted, we can also drop the chmod part. Otherwise, we should probably have AiiDA do it by default?