Some pet corrects, Testing

* pet do not attack to target if attack cause interrupting negative aura.
* pet and target do not leaving combat when target is player and target flee from pet.
* owner of pet entering to combat when target enter combat to pet.
* pet auto follow to owner when goes to far.
* pet do not aggressive when following and do not reached to owner.


Signed-off-by: mns <pgameserver@gmail.com>