Merge "Expose policy key constructors as testAPIs" into udc-dev am: 5857389d am: 3630332c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22102270



Change-Id: I6d1eb41baeb6ff240b8a9c334047043e4f85f323
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>