Merge "Make VCN network policy listener oneway" am: dd2877eabe am: 6a95ca0b62

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1619899

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie60094fc97c90b7b53d19a231de05778ce017d3e