url: do not truncate long hostnames

Currently, around line 417 lib/url.js is truncating hostname and put the
rest of hostname to the path if hostname length after `.`  is equal or
more than 63. This behavior is different from browser behavior. I
changed the code so that it doesn’t truncate.

I also added the test example which has more than 63 length in after
`.` in hostname in test url.

PR-URL: https://github.com/nodejs/node/pull/9292


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>