RESTRICT AUTOMERGE Center align the lock screen wallpaper am: c9e25a5d am:...

RESTRICT AUTOMERGE Center align the lock screen wallpaper am: c9e25a5d am: 2c51ffb1 am: d4a2027f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24104093



Change-Id: I1fdcac20b6bedf26744621da1e1f302b815083a6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>