Ignore testing on Chef 13 for now
Ignore testing on Chef 13 for now

The specs are 1/2 functional and half unit and they need some love before they're going to pass on 13

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

RobbertJanSW/knife-windows,RobbertJanSW/knife-windows