Merge changes Id8776d14,Ifa291c62,I5ea9d200

* changes:
  Track and persist in stats whether traffic is on the default network.
  Add the default network to NetworkStats and NetworkStatsCollection.
  Pass all default networks to NetworkStatsService
tree: 32f944079e797aa9b3819297019f4771d771eb31
  1. core/
  2. services/
  3. tests/