Variable expansion within standalone.xml

The configuration migration rules are not expanding the variables in standalone.xml.

Then the variables must be removed in order to get the rules working. RHAMT should get and expand the variables.

Example that is not working:
<subsystem xmlns="urn:jboss:domain:deployment-scanner:2.0">

<deployment-scanner name="APPSCANERNAME" path="${myvar}" scan-interval="0" runtime-failure-causes-rollback="${jboss.deployment.scanner.rollback.on.failure:false}"/>

</subsystem>

There is a need to remove "myvar" to get CMTool working.