Support expressions in interface and socket related configs

Make it possible to fairly easily control socket bindings from the command line. So, we need expression support for:

1) Static interface criteria values (i.e. <inet-address value="${x}"/> and <loopback-address value="${x}"/>
2) The port-offset on a socket-binding-group
3) The multicast address and port on a socket-binding
4) Perhaps the default-interface on a socket-binding-group
5) Perhaps the interface on a socket-binding
6) The address and port in host.xml's <domain-controller><remote...> element
7) The port in the <management-interface> child elements
8) Perhaps the interface in the <management-interface> child elements