Regarding packages, you might be interested in
https://github.com/kubernetes/charts
Disclosure: I work on the Kubernetes project at Google.
Disclosure: I work on the Kubernetes project at Google.
There were a lot of little things that made us pick the stack we did - a lot of this is highly specific to our use cases and customer base. We will likely have a k8s version at some point. When that time comes (or if enough customers ask for it) I'll re evaluate what we need on the stack.
Thanks for the links!