* handle old versions of latexmk in run count extraction
the log lines for the run number change from stderr to stdout in TL2022
* extend SimpleLatexFileTest to include TL2017
* reset metrics for each scenario in SimpleLatexFileTests
* fix buildscript merge conflict
GitOrigin-RevId: fb74f2025d21ddf43be6a3b90ac6f7df4d975db6