private static Target createTarget(String tenantName, String applicationName, String instanceName, String clusterName) {
        ZoneId zone = ZoneId.from("prod", "us-east-2");
        ClusterSpec.Id cluster = ClusterSpec.Id.from(clusterName);
        return Target.create(ApplicationId.from(tenantName, applicationName, instanceName), cluster, zone, List.of());
    }
@author Morten Tokle
@author Martin Polden
routing-generator/src/test/java/com/yahoo/vespa/hosted/routing/nginx/NginxMetricsReporterTest.java