Merge "Add test for service callback" am: cacf08f6f7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2392835

Change-Id: If68a298d106a38788070e8642743695e2f04f18b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>