This would be cool but then the debate remains almost the same, just how many wolves can the drone guarding the sheep shoot, a wolf has got to eat so some programmers got to randomize a few 'look the other way' actions in.
The thought of the drone shooting didn't even cross my mind. No way anyone would approve military equipment roaming the mountains like that. What if it shot a human?
I was thinking flashlights and sounds to scare them off.
If sheep have evolved to have drone guards, then wolves will just have to feast on deer, elk, and whatnot, until they join forces with the eagles and hawks to take down the drones.