Title: Enable EJB 2.x Container-Managed Persistence
To enable the cmp subsystem the related configuration is needed
In domain mode the extension can only removed if there is no profile which contains the cmp subsystem.
Also in domain mode the extension exists by default but only the *-full* profiles contains the subsystem.
Same issue in EAP6.0 16.9.3 chapter
Verified in 6.4.0-6