Merge "update_verifier: Verify blocks" am: 5614437de3

Original change: https://android-review.googlesource.com/c/platform/bootable/recovery/+/2039129

Change-Id: I53d5a16f78d647dbec57abc51b5d5208313443e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>