Break the kubernetes-minion state in smaller components

[inercia]

At some moment we will install the kubelet in all the machines (including the masters), and maybe the proxy will be run as a daemon set, so it would be good to split this state in several states (ie, kubelet and proxy) and add the kubelet to the role:kube-master

[grahamhayes]

And if we want to add additional services (like fluentd for logging, or a DNS server for when we scale out) having kubelet on the masters would be very useful

[robdaemon]

I'm actually doing some of this work as part of adding haproxy...

[kiall]

This has been done