[PATCH i-g-t v3] igt-runner fact checking

[Peter Senna Tschudin]

I made changes to the code that broke my own unit testing. The test code is broken, and there is no side effect in the actual code. Happy to learn how unit testing is used by our CI. I will wait for comments and will fix the test for V4.

The magic command takes about 20 seconds to run locally:
 $ meson test -C build

>From GitLab.Pipeline:
10/441 lib igt_facts                           FAIL     0.43 s (exit status 98)



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