tools: enforce linebreak after ternary operators

This is to be consistent with the other operators and helps
understanding the context when the code is grepped.

PR-URL: https://github.com/nodejs/node/pull/10213


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>