@Override
    public Optional<ApplicationInstance> getApplication(ApplicationInstanceReference reference) {
        for (ApplicationInstance app : apps) {
            if (app.reference().equals(reference)) return Optional.of(app);
        }
        return Optional.empty();
    }
A hardcoded set of applications with one storage cluster with two nodes each.

@author oyving
@author smorgrav
orchestrator/src/test/java/com/yahoo/vespa/orchestrator/DummyServiceMonitor.java