Merge "New API to listen service update" am: 93587f609b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2369709

Change-Id: I1594927dcac52fe7c87f4d970ccd0a5ce3bb14c2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>