Modify which mobs the dogs attack

[HeroGamers]

Request by HASMCServers on SpigotMC.

Allow players to enable mobs for the dogs to attack in ATTACK MODE - unless the mob is currently having the dog's owner as a target (in which case the dog's loyalty to their owner takes priority, overriding the attack mode selection of mobs to attack while roaming around in attack mode).

[CoDrie]

Great idea! Maybe like black/white list:

1. attack every mob instead of these in list [cow,pig]
2. only attack mobs in list [creeper,zombie,skeleton]