Merge "Add device policy manager namespace to public namespaces" into tm-dev am: 8293974f am: 1368e8a5 am: 38c1a791

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



Change-Id: Iee739512413a1422ffa3dad48b122b1c2e1f031d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>