Merge "Move utils from network stack to libs." am: 21be4fabb5 am: bfadef51df am: 7a3454f47e am: 29826a7a2f

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

Change-Id: I91978c34aa86b30969fdb90e57c1edd862a53a51