(bug 45713) points jslint URL to the checkstyle report

Each jobs triggered by Zuul has a status URL used to craft the message
reported back in Gerrit.  Turns out we can tweak the URL on a per job
basis!

This patch make any jslint job to use the '/checkstyleResult' URL by
default instead of the console.

Change-Id: I6d824556f29b18d006dbe681d56ae014ece1edeb