Document CXF consumer limitations for Fuse on EAP

Please see the notes around CXF consumers at the beginning of the Camel on EAP upstream community documentation:

https://wildflyext.gitbooks.io/wildfly-camel/content/javaee/jaxws.html

https://wildflyext.gitbooks.io/wildfly-camel/content/javaee/jaxrs.html

At present Camel on EAP does not support CXF or Restlet consumers. Attempts to configure these endpoints will fail. We should add this to the Fuse product documentation.