mitchellh/vagrant — pull request #1808 by glensc (2013-06-07 16:05:58+00:00)
Title: add ssh agent sample to Vagrantfile

it's hard to find how to enable it, only info about it is in old [1.0 docs](http://docs-v1.vagrantup.com/v1/docs/config/ssh/forward_agent.html), nothing about it in current [1.2](http://docs.vagrantup.com/v2/) version