[WFLY-2865] Convert 'success' outcomes to 'failed' if OperationRejectionPolicy is not invoked
[WFLY-2589] Support not include attribute default values in transformer test models
[WFLY-1801] Improvements around worker-thread-pool/endpoint choice
Make worker-thread-pool/endpoint configs a choice in xsd
Don't count on parser to add a default endpoint resource; do it in OSHs
Have an OSH validate that both worker-thread-pool and endpoint aren't configured
Transformation improvements:
-- same transformation for all previous versions
-- reject if any endpoint attributes are configured (requires WFLY-2865)
Some test rationalization and improvement, plus restore a test previously removed
[WFLY-2866] Persist default values if the user specified them
Merge pull request #5857 from bstansberry/rem-trans2

[WFLY-1801] Improvements around worker-thread-pool/endpoint choice, plus WFLY-2865, WFLY-2589