Add support to set number of CPUs for virtual run

[jkonecny12]

Without this some tests could be pretty slow because standard is 2 CPUs which is not much these days.

Hi, I'm fighting with mypy and other things and I have hard time to work on this. So I'm creating a PR if someone wants to help me with debugging to finish this if you see the benefit.

Pull Request Checklist

• implement the feature
• write the documentation
• extend the test coverage
• update the specification
• adjust plugin docstring
• modify the json schema
• mention the version
• include a release note

[happz]

@jkonecny12 can you try adding cpu.processors HW requirement to your plans? That should do the trick. See https://tmt.readthedocs.io/en/stable/spec/hardware.html#cpu for the specification.

hardware:
  cpu:
    processors: 79

Or, via command line:

--hardware 'cpu.processors=79'

AFAICT this is not documented correctly, I'll fix that, but that should be all that's needed. And the best thing, the same should work for Beaker and Testing Farm too ;)

Edit: documentation update added in #3293

[jkonecny12]

Sounds great. I wouldn't expect that this is hidden under hardware when the memory is just top class citizen.

[jkonecny12]

Tested and it works.

[happz]

Sounds great. I wouldn't expect that this is hidden under hardware when the memory is just top class citizen.

Yeah, memory and disk happened before I could force hardware into the system :) Internally, they just add memory: .. and disk: ... HW requirements, and if I could, I would remove them in a heartbeat.