Backup owner info as part of settings backup. DO NOT MERGE.

[Cherry pick from master]

Added these settings to the whitelist:
Settings.Secure.LOCK_SCREEN_OWNER_INFO_ENABLED
Settings.Secure.LOCK_SCREEN_OWNER_INFO

Bug: 5342797
Change-Id: I1bd4d04b5651b61919efd8c1b25c04acc5806f4a