Merge changes from topic "flicker-refactor-assertion" into udc-qpr-dev

* changes:
  12/Update assertion classes
  11/Rename reader and artiface interfaces
  10/Unify legacy and faas assertion infra
  9/Cleanup SubjectsParser constructor
  8/Rename flicker test class
  7/Rename FlickerTestData class
  6/Create extractor builder and rename necessary classes
  5/Rename ScenarioConfig class
  4/Rename FlickerService class
  3/Rename scenarioInstance class
  2/Rename scenario class
  1/Rename assertion class