@Override
    public String toString() {
        return "monitor configuration [" +
               "checkInterval: " + checkInterval +
               " requestTimeout " + requestTimeout +
               " failLimit " + failLimit +
               "]";
    }
Returns the number of milliseconds a node is allowed to fail before we
mark it as not working
container-search/src/main/java/com/yahoo/search/cluster/MonitorConfiguration.java