test,tools: adjust function argument alignment

In preparation for a lint rule enforcing function argument alignment,
adjust function arguments to be aligned.

PR-URL: https://github.com/nodejs/node/pull/6390


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Imran Iqbal <imran@imraniqbal.org>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ryan Graham <r.m.graham@gmail.com>