Merge "Add device policy manager namespace to public namespaces" into tm-dev...

Merge "Add device policy manager namespace to public namespaces" into tm-dev am: 8293974f am: 1368e8a5 am: bf80045f am: 5e9be671

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18344246



Change-Id: If0b44b3beb12d254bbc1875000dbb3f73c81f941
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>