[LTP] thermal: add new test group

[Petr Vorel]

Hi Piotr,

> Since there's no other review, is v20 ready to merge?

I'm sorry it will have to wait after upcoming LTP release (which is going to be
this Friday). It's still waits for Cyril's final look. We've been busy with
fixing existing tests, that's why he haven't done it yet. Thanks for
understanding.

Kind regards,
Petr

> 2026-05-18 (月) の 08:11 +0000 に Kubaj, Piotr さんは書きました:
> > I set it to 300s, as requested, because attempts to set it to 60s and
> > 120s gave some failures when running with -i 10.

> > 2026-05-15 (金) の 16:42 +0200 に Petr Vorel さんは書きました:
> > > Hi all,

> > > actually v20 is better than this v21 => setting it changes
> > > requested.
> > > I'd prefer to merge v20.
...