Start an unstarted patch in the hyperv unit tests

This starts a patch that was setup but never started
for a loopingcall that was allowing an occasional
exception to be thrown from the agent on unrelated patches.

Closes-Bug: #1327974
Change-Id: I6cfdb128c2a78e9c087d79a6db850603f2d03fa8
Merge "Start an unstarted patch in the hyperv unit tests"