Merge pull request #635 from kubernetes-incubator/download_images

roles/dnsmasq/meta/main.yml

roles/download/defaults/main.yml

roles/kubernetes-apps/ansible/defaults/main.yml

...es-apps/ansible/templates/calico-policy-controller.yml.j2

roles/kubernetes/node/meta/main.yml

roles/network_plugin/canal/meta/main.yml

roles/network_plugin/flannel/meta/main.yml

scripts/collect-info.yaml

tests/testcases/020_check-create-pod.yml