In Table A.8. CertificateRoles Module Options there is option roleGroupSeparator and in its description there is "Which character to use as the role group separator in the roleProperties file.", but it should be "rolesProperties" instead of "roleProperties".
Moving to ON_QA. The changes should be available for review on the documentation stage within an hour or so from this comment. http://documentation-devel.engineering.redhat.com/site/documentation/en-US/JBoss_Enterprise_Application_Platform/
Verified on stage.