Merge "Expose VCN_MANAGEMENT_SERVICE constant as SystemApi" into main am: 330dc32a01

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3326620

Change-Id: I69a5ceb08d60cbd48339b5286a2a36cc534395e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>