Add cluster cost optimization to Configure

We talked about putting cluster cost optimization under Configure but decided to put it under Monitor since at least the MVC is all about monitoring CPU and RAM usage of the cluster. The next few iterations are focused on the monitoring side as well. And these will be done by the Monitor team. But, to the extent that the ultimate goal of cost optimization isn’t just to monitor, but to act on the information, and that action is about configuring your cluster, that’s a strong argument for putting it under Configure. Just like the Ops Dashboard MVC was implemented by Monitor, but lives under Configure long term.