Merge "Added fingerprint settings feature flag." into udc-qpr-dev-plus-aosp am: aa0233c8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23353298



Change-Id: If3a83d9a0fc16068b186dcb737ce18d945dea733
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>