[MS54.1] Move NetworkStats to updatable sources am: 63627bce56

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1987467

Change-Id: I97311b503c0f959ed98199c89c6a7b657ab8be43
tree: 8627675a0d64f075606989c30ad1725ed142754d
  1. framework/
  2. framework-t/
  3. service-t/
  4. services/
  5. tests/