Merge changes I1450c126,I8926a922,I54403377,Idf216797 into nyc-mr2-dev

* changes:
  DO NOT MERGE IP Connectivity metrics: add connect() statistics
  DO NOT MERGE Fix IP connectivity metrics tests
  DO NOT MERGE IP connectivity metrics: introduce ConnectStatistics and DNS statistics
  DO NOT MERGE IP connectivity metrics: add transport field.
tree: 103aa019b87d5ef6ae5a48111dbf519c26bef900
  1. core/
  2. services/
  3. tests/