TMDM-7500: create corresponding junit for CONF case

TMDM-7500: create junit for 'Reporting' case and code refactoring

TMDM-7500: init fix and junits for 'PROVISIONING' and 'SearchTemplate'

TMDM-7500: update based on new design solution

- revert back to original Compare.compare() call in SystemModels.java
- return empty string to studio as reult of com.amalto.core.storage.services.SystemModels.analyzeModelChange(String, InputStream) for System DMs
- udpate corresponding junits accordingly to reflect the code changes

TMDM-7500: code clean up