Fix value_for_platorm syntax

Apparently I couldn't get this correct the first time. This should
probably be value_for_platform_family
Add vagrant related re-kick helpers

Add enough Vagrantfile to bootstrap a chef server, upload all the
things, and start up a reference implementation with a minimal swift
environment in Chef.
Merge pull request #99 from claco/testing

Merged automatically by jenkins after successful build test
Disable, stop, and remove postfix

With postfix still installed and exim set as the mta in alternatives,
things still seem wonky. Removing postfix entirely before we set the
alternative mta.

Fixes #97
Merge pull request #104 from claco/issue-97

Merged automatically by jenkins after successful build test
First pass of arbitrary configs

closes #92