Ensure service type ends with a dot in discovery am: 2f82fcdd6c am: ed0eb5f385 am: 4950d47b43

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2584551

Change-Id: I8ae6fb3779a333bb3d369c0cde8447e5a5a782de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>