common role in order to support other linux distribs

cluster.yml

roles/common/defaults/main.yml

roles/common/files/bootstrap.sh

roles/common/files/get-pip.py

roles/common/files/runner

roles/common/tasks/calico.yml

roles/common/tasks/download.yml

roles/common/tasks/kubernetes.yml

roles/common/tasks/main.yml

roles/common/tasks/python-bootstrap.yml

roles/download/defaults/main.yml

roles/download/tasks/calico.yml

roles/download/tasks/flannel.yml

roles/download/tasks/kubernetes.yml

roles/download/tasks/main.yml