before the version 9.0 final, the module org.kohsuke.rngom exist as Jboss or wildfly module. but with the newer versions of wildfly 9.0, 10, 11 and the versions of Jboss EAP 7.0 and 7.1, this module was replaced by the jar rngom-2.2.11.jbossorg-1, directly putted near jaxb-iml on the path "com/sun/xml/bind/", but what we remark is that the module.xml com/sun/xml/bind/main still referencing org.kohsuke.rngom as module and this what generate the module not found exception:
the solution, to avoid such module not found exception, that worked with me was to delete the reference of org.kohsuke.rngom as a module and this work fine since it will be implicitly used by jaxbimpl.

need to validate this.