systemd example unit and environment files

The binary names in these are

kube-apiserver
kube-controller-manager
kube-scheduler
kube-proxy
kubelet

The environment/config files need to live in /etc/kubernetes/

I personally like the namespaced binaries a lot more than just 'apiserver' etc.  I wouldn't mind if we switched the binary names to something namespaced in the in project build...
I don't think that this works by default.  I *think* that this is used as the address to get to the proxy.  But when running in a container, 127.0.0.1 will go to the localhost in the container and not the proxy.

@thockin is this still relevant in the new IP-per-service world?