Merge "Update javadoc for setManagedSubscriptionsPolicy" into udc-dev am: c0fdac3d am: 4b82fc5d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23515474



Change-Id: Ifb0fa214602fda1cc9fdb9e1d92783fc823809df
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>