[automerger skipped] Merge "[DO NOT MERGE]Revert "Relax minimum signature...

[automerger skipped] Merge "[DO NOT MERGE]Revert "Relax minimum signature scheme version for apps on system partition"" into sc-v2-dev am: 70260553 am: ff844f43 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16943318

Change-Id: Iabe1b33048be61e2fe22a4d5e8f3a539a2f5a1f2