Merge "Skip NetworkPolicyManagerTest on unsupported devices." into sc-dev am: 0a224da8d3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/15167635

Change-Id: Ibcdf57e5dad03cea9e07cc18c1c3c5b6acdcb5f0