@Override
    public void doBuild(ContainerModel model, Element spec, ConfigModelContext modelContext) {
        ConfigserverCluster cluster = new ConfigserverCluster(modelContext.getParentProducer(), "configserver",
                                                              options, modelContext.featureFlags());
        super.doBuild(model, spec, modelContext.withParent(cluster));
        cluster.setContainerCluster(model.getCluster());
    }
Builds the config model for the standalone config server.

@author Ulf Lilleengen
config-model/src/main/java/com/yahoo/vespa/model/container/xml/ConfigServerContainerModelBuilder.java