[WFCORE-400] : Remove <any-ipv4-address/> and <any-ipv6-address>.

Removing usage of any-ipv4-address and any-ipv6-address.
Only any-address + preferred IP stack system property is supported.

Jira: https://issues.jboss.org/browse/WFCORE-400
This constant needs to be renamed to match the property. The semantic of java.net.preferIPv6Addresses is not the same as what a "java.net.preferIPv6Stack" property would imply so we shouldn't hide that with the constant name.