Add regression tests for Windows dmi plugin.
Add regression tests for Windows dmi plugin.

Signed-off-by: Pete Higgins <e3b6cda228242c30b711ac17cb264f1dbadfd0b6@peterhiggins.org>

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