Merge "Add utilities for network validation testing" am: ff15197c34 am: fe093f509b

Original change: https://android-review.googlesource.com/c/platform/cts/+/1364518

Change-Id: I668fe775f984cdbef56bb21e72305571bc8a48bc
tree: 7dacab5b8823ea92fa303500c8e3bd0706f9bcd5
  1. tests/