Merge changes from topic "bpfStats"

* changes:
  Use /proc/net/dev to get stats summary
  Add bpf support for NetworkStatsFactory
  Add BPF support for NetworkStatsService
tree: ad97972a34fbf27b12b0e2f1b3dfa55e560ec2c1
  1. core/
  2. services/
  3. tests/