This PR follows on from the multi-version CRD investigation (https://issues.jboss.org/browse/ENTMQST-760).

AbstractAssemblyOperator has a validate() method which currently generates WARN in the log for deprecated properties and unknown properties. We need to expand this so rather than just complaining about a property being deprecated, it can also tell the user extra details. For example if a property is renamed, or a feature is now configured in a different part of the resource the message will include this information. This will probably involve using some new annotation(s).