How to read operating-system environment variables from JBoss EAP 6/7 configuration files?

Issue

• Is it possible to read OS environment variables in EAP 6 configuration files standalone.xml, domain.xml and host.xml?

• For example, I would like to read OS environment variable HOSTNAME and set it to the following inet-address:

<interfaces>
    <interface name="management">
        <inet-address value="${jboss.bind.address.management:127.0.0.1}"/>
    </interface>
    <interface name="public">
        <inet-address value="${jboss.bind.address:127.0.0.1}"/>
    </interface>
    <interface name="unsecure">
        <inet-address value="${jboss.bind.address.unsecure:127.0.0.1}"/>
    </interface>
</interfaces>

I understand I can set OS environment variables via the java system properties in command line like:

./standalone.sh -b $HOSTNAME -bmanagement $HOSTNAME

But I would like to achieve this without specifying OS environment variables via command line.

• Can I use these in the XML configurations so that we don't have to update the loopbacks manually?

<interfaces>
    <interface name="public">
        <inet-address value="${jboss.bind.address:jboss.bind.localhost}"/>
    </interface>
</interfaces>