private boolean shouldSuggest(ApplicationId app, ClusterSpec cluster, ProvisioningTester tester) {
        var currentResources = tester.nodeRepository().nodes().list().owner(app).cluster(cluster.id()).not().retired().toResources();
        return tester.nodeRepository().applications().get(app).get().cluster(cluster.id()).get()
                     .shouldSuggestResources(currentResources);
    }
Tests the scaling suggestions maintainer integration.
The specific suggestions are not tested here.

@author bratseth
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/maintenance/ScalingSuggestionsMaintainerTest.java