Merge "Do not purge process groups on system_server startup" am: 9e68daf1...

Merge "Do not purge process groups on system_server startup" am: 9e68daf1 am: 87dfb8e5 am: 1c28b197

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2080239



Change-Id: I64b79f28169de3fd97cd372877bcf0c5850efed2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>