[automerger skipped] [RESTRICT AUTOMERGE] UserDataPreparer: reboot to recovery for system user only am: ecf569bd16 am: 4eadb46170 -s ours am: ef37c0da49 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17416249

Change-Id: I6a8f1710e07b4ff76dfa868bfc2f968ff2d8c050
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>