* Split Postgres platform into Postgres10 & Postgres9
- Use "generated by default as identity" for Postgres10 identity columns
* Add postgres9 migrationtest resources
* Set default back to h2
* Add postgres10 migration test resources
* FIX: warnings (add generics, overrides, fix imports) - should be no effecive code change
* replaced deprecated methods by default methods
* FIX: more compiler warnings
* FIX more warnings - no code changes
* FIX: deprecated call to JsonParseException
* Remove unused code, check unused variables
* ADD: ContitonaltestRunner to skip tests for certain platforms
* Use annotations to control on which platforms a test shoud run
* FIX: compile errors