[SERVDEV-22]
- Added auxiliary TransformationResult class to store the result of a kettle element process request.
- Refactored processRequest method to separate kettle execution from result processing.
[SERVDEV-22]
- Refactored TransformationResult into outer class KettleResult.
- Added in KettleElementHelpper a method to parse kettle parameters from a request.
- Refactored *KettleOutput to have a processRequest method that processes the new KettleResults.