Utilise WFLY capabilities to obtain socket bindings

Currently we utilise a deprecated api (org.jboss.as.network.SocketBinding.JBOSS_BINDING_NAME) to retrieve a socketbinding in EndpointUtils. This should be replaced by the wildfly capability[1] org.wildfly.network.socket-binding

[1] https://docs.jboss.org/author/display/WFLY10/Working+with+WildFly+Capabilities