WF-CORE 75: Remove need for native-interface on the Host Controller

Jira: https://issues.jboss.org/browse/WFCORE-75
This is a 3 commits PR : 
 * the first part is about enabling HC- DC communication using any of the 3 supported remote procotols
 * the second is about using the management interfaces defined in HC to be passed automatically to the slaves using the ProcessController.
 * the third is about testing
Enclosing the IPv6 address in [] is not needed with the URI constructor you use at L248. OTOH, NetworkUtils.formatPossibleIpv6Address() does more than just add the [], it also does the whole canonize thing, so calling it seems ok. But, either way this and RemoteDomainConnection.call should be handled consistently.