[automerger skipped] [RESTRICT AUTOMERGE] UserDataPreparer: reboot to recovery for system user only am: a296a2b724 am: 6976474816 -s ours am: 4ec9daeef7 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17416380

Change-Id: Idf80c2fac5b9196b8070a3e6c11b9c09863f93e8
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>