OwlBot Postprocessor doesn't run ProcessModule when owlbot.py is changed

[suztomo]

OwlBot Postprocessor doesn't run ProcessModule when owlbot.py is changed in chore: exclude and remove unnecessary owlbot postprocessor templates .
https://github.com/googleapis/synthtool/blob/master/docker/owlbot/java/bin/entrypoint.sh

This is preventing us from checking correct diff.

[suztomo]

I didn't write problem correctly. Not reproducible. The PR in question was merged.