The prod build of jsf-impl 2.1.19 should product a -sources jar for the Maven repository. https://brewweb.devel.redhat.com/buildinfo?buildID=259165
Built in https://brewweb.devel.redhat.com/buildinfo?buildID=301820
PR for EAP: https://github.com/jbossas/jboss-eap/pull/623
Merged in https://github.com/jbossas/jboss-eap/commit/eb02513613
Verified for EAP 6.2.0 ER7. There is jboss-eap-6.2.0.GA-maven-repository/com/sun/faces/jsf-impl/2.1.19-redhat-2/jsf-impl-2.1.19-redhat-2-sources.jar in jboss-eap-6.2.0.ER7-maven-repository.zip.