Autogenerate Executors in Configuration file

[shahzebsiddiqui]

@ireed based on our discussion in the HPC validation mini series, you mentioned the need for auto-generating configuration such as slurm partition that can just be picked up by buildtest.

I think this feature request is reasonable.

We need to auto-generate executors for all executor types i take it local, slurm, lsf, pbs, cobalt. Potentially we can have a command buildtest config executors discover that can detect new executors, now we can have buildtest automatically update the configuration file.

I take it if an executor is already defined, then down redefine a new executor

[ireed]

@shahzebsiddiqui the main thing that needs to be detected for cloud systems is the specs. For a given node, i dont know things such as the expected number of cores, gpus, interconnects etc. Commands such as lshw may not be reliable due to potential HW failure and hypervisor issues.