Merge "Show Reachability only once per user on device lifetime" into tm-qpr-dev am: fa30f6e5d7 am: a21ef72d8f am: 9858187af0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22237105

Change-Id: I9663a3ae84ce87968c33f8579eb9895afe7acfd7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>