OOIION-1378: Data product preload enhancements /REL2.0

- Preload StreamConfiguration: saves the stream_type
- Preload OOI DataProduct enhanced: uses stream_type to determine the PARSED stream for L0/L1/L2
- Preload OOI DataProduct enhanced: add port depth to DP name if not unique. add node code to name if not unique
- Preload OOI DataProduct enhanced: idempotent generation of all OOI DataProducts individually
- General preload log output polished
- PRELOAD tests redirected to TESTED_DOC