Merge "snapshotctl: Add apply-update option" into main am: 209266f4f6 am: 1cc5c24901

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2954451

Change-Id: Ib68388ad8fdf952660d73ff620564588e41ef6f3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>