Add desert debuff to people who disconnects in BG

Like the title says, please add the deserter debuff to players who disconnects from the game in battleground. While I appreciate the thought behind the idea of giving players who just lost connection for a little bit, some time to log back in, it is now being abused by players.

Certain players, whenever they're low on health and are about to die, log in to the same account on another wow instance. That makes them instantly disappear for other players, and when they log back into the game again a couple of seconds later, they'll appear at the starting area of the battleground, unharmed.