RESTRICT AUTOMERGE Add namespace for DevicePolicyManager P/H experiments am: f90b1ac98d am: 3dea601114

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18164349

Change-Id: I2d65c9019d90e76f31f775cbbb31311c6d67b608
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>