test: change the hostname to an invalid name

In my Ubuntu 14.04.2 LTS machine, it tries to resolve the name
'blah.blah' and it fails with ETIMEOUT instead of ENOTFOUND. This patch
changes the hostname to "...", an invalid name, so that it will fail
immediately.

PR-URL: https://github.com/nodejs/io.js/pull/2287


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Evan Lucas <evanlucas@me.com>