* Lint everything in the repository with yamllint
* yamllint fixes: syntax fixes only
* yamllint fixes: move comments to play names
* yamllint fixes: indent comments in .gitlab-ci.yml file
* Fix random failure in debug: var=result.content|from_json
* netchecker agents are deployed on all k8s-cluster group members
* reducing limits/requests is not enough, switching to n1-standard-2
* gce_centos7 need more cpu
* Enable AutoScaler for CoreDNS
* Only use one template for dns autoscaler
* Rename a few variables for replicas and minimum pods
* Rename a few variables for replicas and minimum pods
* Remove replicas to make autoscale work
* Cleanup kubedns-autoscaler as it has been renamed
