Add face auth triggers in FaceAuthInteractor am: f96f724edd am: c6eb9c74f2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22560144

Change-Id: I45495100af009722d53042cef53e33938f6cabb8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>