Merge "Adding NetworkStack Metrics/protos in the Networkstack" into rvc-dev am: 8442e65e am: e011207f am: ce29d6af am: 636e2637

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/11629108

Change-Id: Ie61d7e84a1c959c3377b5fa4e8163695964acdf1