Merge "Don't attach pipeline to group expansion mgr." into udc-dev am: d77e69686b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24148304

Change-Id: Ic95aa754b9cc757ba9384755c62a63e4875634e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>