Merge "New pipeline: Separate stability rules for group pruning from group...

Merge "New pipeline: Separate stability rules for group pruning from group changing" into tm-dev am: baafc8b1 am: 1310baf2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18030065



Change-Id: I88f0de7bcf97545d162c7dd1c5e09f382fe938f6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>