Merge "Move IpUtils to frameworks/libs/net" am: 4cb4ef8333 am: 9623f122df am: ff257a083e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1440234

Change-Id: Ia364eb033d4ed9ae8db4f27fcfd065065581ae73
tree: 280b8aa2f837e5f17c5b62b98a35ee70f5b5a713
  1. Tethering/