nmci: spedup tags import
This should speedup each import of tags.py by factor more than 3 (except the first one, 600ms -> 160ms).
We will see how stable it is. I did not find any better solution than this, we will see if it is wort it.
Also, do status only before scenario, if test passes, only execute after scenario status in case of fail. This saves another 300ms per test.
Edited by Filip Pokryvka