public ServiceListResponse checkConvergenceForAllServices(Application application, Duration timeoutPerService) {
        return checkConvergence(application, timeoutPerService, new HostsToCheck(Set.of()));
    }
Checks all services in given application. Returns the minimum current generation of all services
configserver/src/main/java/com/yahoo/vespa/config/server/application/ConfigConvergenceChecker.java