static Map<String, String> dimensions(ApplicationId application, ClusterSpec.Id cluster) {
        Map<String, String> dimensions = new HashMap<>(dimensions(application));
        dimensions.put("clusterid", cluster.value());
        return dimensions;
    }
A version 6.163.20 will be returned as a number 163.020. The major
version can normally be inferred. As long as the micro version stays
below 1000 these numbers sort like Version.
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/maintenance/MetricsReporter.java