Make `npm run parserTests` match the parsoidsvc-*-parsertests-run-harder job.

This allows us to use just the jenkins jobs which invoke `npm test`.

Change-Id: I2d8e111da26d3f883cf7aba270847317724965e2
Merge "Make `npm run parserTests` match the parsoidsvc-*-parsertests-run-harder job."