I was finally able to get HornetQ Rest working in AS7, but not using the main AS7 configuration, standalone-preview.xml (or domain.xml). Queue entries there are instantiated, but as the rest libraries are not provided as part of AS7, no rest interface is available. Providing the rest libraries as part of the app does not result in the rest interface being available for queues defined in the AS7 configuration file.
It looks like if you want Rest, you have to do all the configuration of HornetQ in the app itself. So I would say the AS7 does not support HornetQ Rest. Please correct me if I am wrong.