[WFLY-2243] Fixing resource adapters transformers and tests
[WFLY-2231] Fixing datasources transformers and tests
[WFLY-2231] Make DS add with enabled=true a composite with the add and :enable
[WFLY-2231] Some attributes are in fact nillable in the old model
Merge pull request #5868 from kabir/maeste-transformers

Maeste transformers