Merge "Move PackageManagerTests to postsubmit" into udc-dev am: 72b4737194 am: 3a45b6e195 am: 91e32fa426

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24463858

Change-Id: Ib30cfbf876ee2b532e3255f5b943c69080a33fc4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>