@Test
    public void suggests_max_1_group_in_container_clusters() {
        ClusterResources min = new ClusterResources(2, 1, new NodeResources(1, 1, 1, 1));
        var fixture = DynamicProvisioningTester.fixture()
                                               .clusterType(ClusterSpec.Type.container)
                                               .awsProdSetup(true).capacity(Capacity.from(min, min)).build();
        fixture.setScalingDuration(Duration.ofHours(6));
        fixture.tester().clock().advance(Duration.ofDays(2));
        fixture.loader().applyCpuLoad(1.0, 120);
        List<Autoscaling> suggestions = fixture.tester().suggest(fixture.applicationId, fixture.clusterSpec.id(), min, min);
        assertTrue(suggestions.stream().allMatch(s -> s.resources().get().groups() == 1));
    }
We prefer fewer nodes for container clusters as (we assume) they all use the same disk and memory
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/autoscale/AutoscalingTest.java