debian wheezy not properly tested

[k9ert]

Although stated in the readme:

Supported Platforms
Debian 7.x (wheezy)

getting the URL from the kitchen.yml:

➜  pingworks-chef-dash git:(master) curl -I http://vagrant.pingworks.net/opscode_debian-7.7_chef-11.16.4-1.box
HTTP/1.1 404 Not Found
Date: Mon, 18 Apr 2016 15:33:27 GMT
Server: Apache/2.2.22 (Debian)
Vary: Accept-Encoding
Content-Type: text/html; charset=iso-8859-1

➜  pingworks-chef-dash git:(master)