Merge "Whitelist package verifiers for bg operation" into rvc-dev am: 062b1514 am: 3a48d58f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11854551

Change-Id: I31c7fe502c46747405e5c9e56cd9b6e028d85a14