Merge "Add new permission KEEP_UNINSTALLED_PACKAGES" am: 141033c6cc am: b185d3d024

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1580528

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Id55a2dc25a0537635606a286d9d197e7bc7e5960