Remove abstractions (#2219)
* refer to the step names directly
* hardcode step name
* hardcode step name to simplify code
* hardcode dataset-info step name
* fix rows
* fix test
* ensure STEP_DA is the first one in alphabetic order (for tests)
* hardcode step config-info
* fix test'
* remove unused code
* hardcode two steps
* fix test
* remove dead code
* remove dead code
* remove VERSION constants
* use constants for cache kinds lists
* hardcode parallel steps
