Add kube-minions role
Add kube-minions role

Implement kube-minion ansible role, using flannel as overlay network.

- Kubeconfig and kube-proxy point to keepalived/haproxy VIP

- Update inventory file, gorup names are changed

- Add vars sample file all.yml.sample

Resolves: #2

genti-t/b-kube,genti-t/b-kube