Yamllint fixes (#4410)

* 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

mitogen.yaml

+---
 - hosts: localhost
   strategy: linear
   vars:

scale.yml

@@ -20,8 +20,8 @@
     - { role: kubespray-defaults}
     - { role: bastion-ssh-config, tags: ["localhost", "bastion"]}
 
-##Bootstrap any new workers
-- hosts: kube-node
+- name: Bootstrap any new workers
+  hosts: kube-node
   any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
   gather_facts: false
   vars:
@@ -30,22 +30,22 @@
     - { role: kubespray-defaults}
     - { role: bootstrap-os, tags: bootstrap-os}
 
-##We still have to gather facts about our masters and etcd nodes
-- hosts: k8s-cluster:etcd:calico-rr
+- name: Gather facts about our masters and etcd nodes
+  hosts: k8s-cluster:etcd:calico-rr
   any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
   vars:
     ansible_ssh_pipelining: true
   gather_facts: true
 
-##We need to generate the etcd certificates beforhand
-- hosts: etcd
+- name: Generate the etcd certificates beforehand
+  hosts: etcd
   any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
   roles:
     - { role: kubespray-defaults}
     - { role: etcd, tags: etcd, etcd_cluster_setup: false }
 
-##Target only workers to get kubelet installed and checking in on any new nodes
-- hosts: kube-node
+- name: Target only workers to get kubelet installed and checking in on any new nodes
+  hosts: kube-node
   any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
   roles:
     - { role: kubespray-defaults}

test-infra/image-builder/cluster.yml

+---
 - hosts: image-builder
   gather_facts: false
   roles:

test-infra/image-builder/roles/kubevirt-images/defaults/main.yml

+---
 images_dir: /images/base
 
 docker_user: kubespray+buildvmimages

tests/files/do_ubuntu-canal-ha.yml

+---
 cloud_image: ubuntu-16-04-x64
 cloud_region: nyc3
 mode: ha

tests/files/gce_centos-weave-kubeadm-sep.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_machine_type: "n1-standard-1"

tests/files/gce_centos7-calico-ha.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_region: us-central1-c

tests/files/gce_centos7-cilium.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_region: us-central1-c

tests/files/gce_centos7-flannel-addons.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_region: us-central1-c

tests/files/gce_centos7-kube-router.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_region: us-central1-c

tests/files/gce_centos7-multus-calico.yml

+---
 # Instance settings
 cloud_image_family: centos-7
 cloud_region: us-central1-c

tests/files/gce_coreos-alpha-weave-ha.yml

+---
 # Instance settings
 cloud_image_family: coreos-alpha
 cloud_region: us-central1-a

tests/files/gce_coreos-calico-aio.yml

+---
 # Instance settings
 cloud_image_family: coreos-stable
 cloud_region: us-central1-a

tests/files/gce_coreos-canal.yml

+---
 # Instance settings
 cloud_image_family: coreos-stable
 cloud_region: us-central1-c

tests/files/gce_coreos-cilium.yml

+---
 # Instance settings
 cloud_image_family: coreos-stable
 cloud_region: us-central1-c

tests/files/gce_coreos-kube-router.yml

+---
 # Instance settings
 cloud_image_family: coreos-stable
 cloud_region: us-central1-c

tests/files/gce_debian9-calico-upgrade.yml

+---
 # Instance settings
 cloud_image: debian-9-kubespray
 cloud_region: us-central1-b

tests/files/gce_opensuse-canal.yml

+---
 # Instance settings
 cloud_image_family: opensuse-leap
 cloud_region: us-central1-c

tests/files/gce_rhel7-canal-sep.yml

+---
 # Instance settings
 cloud_image_family: rhel-7
 cloud_region: us-central1-a