Merge "Don't attach pipeline to group expansion mgr." into udc-dev am: d77e6968

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



Change-Id: Ibb9e354bff6106dadb8528bb2ed336ac2428a42d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>