[LTP] [PATCH] [RFC] doc: Add testers guide

[Petr Vorel]

Hi Cyril,

very nice reading, thank you!

I found one more typo to these which Ricardo and Alok Tiwari found:

+and skill one cay say as much as is needed write the kernel code.
cay -> can

With these typo fixed:
Reviewed-by: Petr Vorel <pvorel@suse.cz>

> +It's a good idea to start small with an evironment that models your production.
> +Once that works well you can try different configurations. Select a few
> +interesting ones and run them for some time in order to get an idea of their
> +usefulness. If you are feeling adventurous you may try to measure and compare
> +actual test coverage with one of the tools such as lcov. If you do so do not

People can use search engines, but maybe having lcov, pareto principle and kirk as links?

`lcov <https://github.com/linux-test-project/lcov>`_.

Maybe point out in "Debugging test failures" section about `-iN` or `-IN`
possibility and that how single core vs. more cores can influence the result?

Kind regards,
Petr