Pre download all required container images as roles' deps.
Drop unused flannel-server-helper images pre download.
Improve pods creation post-install test pre downloaded busybox.
Improve logs collection script with kubectl describe, fix sudo/etcd/weave
commands.
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
'etcd_cert_dir' variable is missing from 'kubernetes-apps/ansible'
role which breaks Calico policy controller deployment.
Also fixing calico-policy-controller.yml.