OTA: update SetBlockDeviceReadOnly am: fc20b67da1 am: dd09e617cb

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2745153

Change-Id: Ie2c4ead837a1b7c0aea180c52d02bdafb6e91a99
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>