Move flannel to etcd datastore

roles/network_plugin/canal/tasks/main.yml

...ugin/canal/templates/canal-calico-kube-controllers.yml.j2

roles/network_plugin/canal/templates/canal-config.yaml.j2

roles/network_plugin/canal/templates/canal-cr-flannel.yml.j2

roles/network_plugin/canal/templates/canal-cr.yml.j2

roles/network_plugin/canal/templates/canal-crb-canal.yml.j2

roles/network_plugin/canal/templates/canal-node-sa.yml.j2

roles/network_plugin/canal/templates/canal-node.yaml.j2

...rk_plugin/canal/templates/canal-secret-calico-etcd.yml.j2

roles/network_plugin/canal/templates/cni-canal.conflist.j2