Host controller cannot resolve jboss.server.log.dir expression for log paths

Issue

• We tried to configure a domain managed JBoss instance with a gc log path relative to jboss.server.log.dir, but the host controller couldn't resolve this expression.

  <option value="-Xloggc:${jboss.server.log.dir}/gc.log"/>
  

• We have a system property that uses the internal jboss variable replacement, to point to the logging dir of a server instance. We just moved from EAP 6.2.2, where variable replacement worked just fine, to EAP 6.4 where this doesn't seem to work anymore. The value of the system property is : ${jboss.server.log.dir}/xyz
  And here is the stacktrace from the host controller starting the server

14:55:20,736 ERROR [org.jboss.as.controller.management-operation] (Host Controller Service Threads - 21) JBAS014612: Operation ("start") failed - address: ([
    ("host" => "host002"),
    ("server-config" => "abc")
]): java.lang.IllegalStateException: JBAS014802: Cannot resolve expression '${jboss.server.log.dir}/xyz'