WFLY-3833 Cannot run mixed-domain tests on IPv6 hosts
Merge pull request #6689 from dpospisil/WFLY-3833

WFLY-3833 Cannot run mixed-domain tests on IPv6 hosts
[WFLY-3830] Make NamingContext.lookup more portable

* use the lookup(String) version in NamingContext as some JNDI providers
  expect a specific type of Name (e.g. CompoundName) instead of the
  CompositeName instances we use.

JIRA: https://issues.jboss.org/browse/WFLY-3830