Merge "Do not purge process groups on system_server startup" into tm-dev am:...

Merge "Do not purge process groups on system_server startup" into tm-dev am: a7a36d96 am: 47e50662

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18091725



Change-Id: I3c00c233a256875d5d8a00425219a2289c7f4608
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>