Decrease cost of running personal k8s cluster

[mattjmcnaughton]

Issue Currently, I'm paying ~$150 a month to host my personal-k8s-cluster on AWS. I'd love to pay less if that's possible.

Implementation I hypothesize that the nodes in my cluster could have fewer resources.

I think one of the first orders of business will be setting up monitoring on resource usage (specifically CPU and mem) using Heapster.

Definition of Done

• [x] I feel confident I'm paying the minimum possible amount for a working Kubernetes cluster.
• [x] I've updated bootstrap so that if I use it to create a new cluster, it will be cost effective.
• [x] Blog post.