Merge "Add alpha animation for 180 rotation" into rvc-dev am: 04e81462ce am: ec46cc4326 am: 6647300f89 am: 1c93dcea7a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12033206

Change-Id: I74cd3de1a135cbd1654f59f878431ec5988f8cb9