Move utilities to libs/net am: de5905fe04 am: 248484d0bd am: c1f85af85d

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1350182

Change-Id: I9ffad81880619e7be4d56e8ceeb0c5ff9bb7100a
tree: a5d63556d930c1cf852d5c48d960ac19c020511a
  1. staticlibs/