public static OriginName fromVipAndApp(String vip, String appName) {
        return fromVipAndApp(vip, appName, vip);
    }
Constructs an OriginName with a target and authority from the vip and app name.   The vip is used as the NIWS
client name, which is frequently used for configuration.
zuul-core/src/main/java/com/netflix/zuul/origins/OriginName.java