Merge "Updated NotificationPanelViewController to listen to animateExpandNotificationsPanel and animateCollapsePanels." into rvc-dev am: 489dd715 am: 10fa6467

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11921452

Change-Id: I66b5a18868c07e01f5a7b21dcc71f8106bfdec11