test,lib: align arguments in multiline calls

An upcoming custom lint rule will provide slightly more strict
enforcement of argument alignment for multiline function calls. Adjust
existing code to conform.

PR-URL: https://github.com/nodejs/node/pull/8642


Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>