Merge "Report sparse per-iface stats using atrace." into main am: ac871ada08 am: 8204530c1b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2802441

Change-Id: Ia2e8863338108e12635daa4b7ecdd36e5ac9bb28
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>