Remove tcp_nodelay directive

The reasoning here - https://github.com/h5bp/server-configs-nginx/issues/28 - seems to make sense. When we set `tcp_nodelay` to off, we tell Nginx to use Nagle's algorithm to figure out how packets should be buffered with a possible 500ms latency if it can't figure things out in time. This 500ms latency is something that even Nagle says (http://developers.slashdot.org/comments.pl?sid=174457&threshold=1&commentsort=0&mode=thread&cid=14515105) should stay in the 1980s.

Suggesting we remove this directive and leave it to Nginx's default `on` to *not* use Nagle's algorithm.
Merge pull request #238 from 10up/nginx-tcpnodelay

Remove tcp_nodelay directive
Process subdomains for each default domain we provide Nginx configs for.

This makes it easier to setup multisite with subdomains while avoiding too many file edits in the VVV base. Other modifications will still be required, such as setting up recognition for the new hosts on the local machine and in the guest, but this takes away the need to restart Nginx.
Merge pull request #237 from 10up/237-subdomain-support

Setup default WordPress domains for multisite subdomain support