[WFLY-2239] Messaging transformation for 7.2.0

add resource transformers for 7.2.0.Final

* fix messaging transformers for 7.1.2.Final & 7.1.3.Final
  that were missing the checkSubsystemModelTransformation checks
* put back the failover-on-server-shutdown deprecated attributes in the
  model and marshalled XML
* allow null for socket-binding attribute as it has alternatives and can
  be undefined
* clean up the code to make the resource transformation simpler to figure
  out