stop voting when parser tests do not pass

Some extensions are failing parser tests and need action:

BookManager: https://bugzilla.wikimedia.org/49879
NaturalLanguageList  https://bugzilla.wikimedia.org/49881
Transliterator https://bugzilla.wikimedia.org/49882

The Math extension does not pass test since texvc is not build. We need
a job to verify it compiles properly and the tests are passing. That is
logged as https://bugzilla.wikimedia.org/49884

Change-Id: I72bc9ae6b185f497450a17b4ad86bb1c8c212211