Merge "Add a NetworkProvider class to the SDK." am: 3bd0d010bb am: 4de6a72e85 am: b24adb4bb0

Change-Id: I7161415a495f9d31762545b5efeb81b387a475cd
tree: 6b0fe7b9697961d0550fbaed88ba097da4865876
  1. core/
  2. services/
  3. tests/