Merge "Allow MANAGE_TEST_NETWORKS to register and get VCN policies." am: 7b02279e0a am: 9a83740d0e am: c3b6259903 am: 560208f561

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1719273

Change-Id: I76e8d83810f5b0438371a743b1bd4cc29e7ed27f