[WFCORE-439] : Wrong format of IPv6 addresses in log entries

Log entries now have URI formatted addresses.

Jira: https://issues.jboss.org/browse/WFCORE-439
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=900564
+1. We never throw NPE as we treat any NPE as a bug in the code that threw it. If the javadoc for the inet param declares "Cannot be {@code null}" then just using an assert is fine.