Merge pull request #62 from ansibl8s/flannel

roles/kubernetes/preinstall/vars/redhat.yml

roles/network_plugin/handlers/main.yml

roles/network_plugin/tasks/calico.yml

roles/network_plugin/tasks/flannel.yml

roles/network_plugin/tasks/main.yml

roles/network_plugin/templates/docker

roles/network_plugin/templates/flannel/flannel-pod.yml

roles/network_plugin/templates/flannel/network.json

...twork_plugin/templates/flannel/systemd-flannel.service.j2

roles/network_plugin/templates/systemd-docker.service