public static NodeFailTester withOneUndeployedApplication(Capacity capacity) {
        return withOneUndeployedApplication(capacity, ClusterSpec.request(ClusterSpec.Type.container, testCluster).vespaVersion("6.42").build());
    }
Create hostCount hosts, one app with containerCount containers, and one app with contentCount content nodes.
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/maintenance/NodeFailTester.java