Proxy network traffic for vagrant VMs

Thanks to the shitty network condition here people have to fight their way to the INTERNET whenever they are looking for something cool.

It has come to vagrant this time. Have been trying https://github.com/UtahDave/salt-vagrant-demo for a simple salt setup. It's already got functional code incorporated. But guess what, it needs free INTERNET access from within vagrant VMs. Luckily a bit of digging led me to https://github.com/tmatilai/vagrant-proxyconf. Nice piece of work that just works!