Merge changes Ic67cff95,Id7a6175c,I3d6896f5,Iaff727e7

* changes:
  Updates to handler logic for multilayer requests
  Update to sendAllRequestsToProvider for Multilayer
  Multilayer request updates to request callbacks
  Multilayer support when NAI requests are updated
tree: 34da392bf9e040c4e9f768586ebbcc1cdfde92ab
  1. core/
  2. service/
  3. services/
  4. tests/
  5. OWNERS