Merge "Adding NetworkStack Metrics/protos in the Networkstack" into rvc-dev am: 8442e65e am: ab4da705 am: fa5a1755 am: b3ea8761

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

Change-Id: Ia64153848db6c94dae05437f8edf4c439e3bc7cf