Ported OONI's Vagrant setup code

Currently `vagrant up` does all machine setup and if everything goes ok then it runs torperf. 

Ideally this would instead launch a daemonised version of torperf and we can port forward the webui/control ports but this should do for now. 

setup-dependencies.sh has an embedded license, it's 2 clause bsd, which afaik is compatible with your 3 clause version but I don't think it matters much since they're both (c) The Tor Project, but you might want to check with one of those guys :)