Merge "Move utils from network stack to libs." am: 21be4fabb5

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1350083

Change-Id: I846dae9b7e36ddf6360bb946cc07beb8c44a34a5
tree: 06d92a36fd718ee147625644f4d23f192a2762f3
  1. core/
  2. services/
  3. tests/