* remove need for `k8s-cluster` parent group
* rename kubernetes/preinstall to kubernetes/common
* make kubernetes/common a dep for both node and master
* move all kubernetes defaults to kubernetes/common
* had python errors with new apps role ... feature flagged it off
Currently kubespray does not install kubernetes in a way that allows cinder volumes to be used. This commit provides the necessary cloud configuration file and configures kubelet and kube-apiserver to use it.