Merge "Notify NetworkStats only when interfaces changed in updateLinkProperties" am: 0f4cb380f0

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2243498

Change-Id: I0425aa4384a9cb99aee07de56c23a50c2c2ebd90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>