Add a unit test for the virtualization case.
Add a unit test for the virtualization case.

Signed-off-by: Joshua Justice <6bdfacf46df5e115d8d7bc603591ed7fa0e1b272@bloomberg.net>

mattray/ohai,chef/ohai,chef/ohai,higanworks/ohai,jaymzh/ohai,jaymzh/ohai,higanworks/ohai,mattray/ohai