[automerger skipped] UserDataPreparer: reboot to recovery for system user only...

[automerger skipped] UserDataPreparer: reboot to recovery for system user only am: 7172fa43 am: 8980aeac -s ours

am skip reason: Merged-In Ia1db01ab4ec6b3b17d725f391c3500d92aa00f97 with SHA-1 4c76da76 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17106702

Change-Id: I83081105d131de0896ea034c58aad0227cbb28e2