carrier data usage: Use carrier template as default policy am: 22d53be4f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14782679

Change-Id: I8bdde6aaeea04c4c70a37d5a71ad31a5590323a9
tree: 6ed57b16abee3a8a35d95385bff4a56f23a55c4d
  1. core/
  2. services/