Merge "Relax minimum signature scheme version for apps on system partition"...

Merge "Relax minimum signature scheme version for apps on system partition" into rvc-dev am: 67cb3a61 am: a61dae35

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11885723

Change-Id: I3729655c7771a16cc9343d10e7488c4f11dae61a