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

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



Change-Id: I60e545f70805ea46cfc1c4be70de4e860943d895
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>