Enforce background data flag, rules through netd.

Connect up netd penalty box through NMS, and enforce the existing
background data flag by putting all UIDs in penalty box.  Allow
platform applications to have policy applied.  Only dispatch unique
rules to netd, avoiding any repeats.

Bug: 4598463, 4965677
Change-Id: Ibf9beff998ba7a1ea92f5e2f7eeba7b483d4b918
5 files changed