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

.gitlab-ci.yml

@@ -1,3 +1,4 @@
+---
 stages:
   - unit-tests
   - moderator
@@ -8,7 +9,7 @@ stages:
 variables:
   FAILFASTCI_NAMESPACE: 'kargo-ci'
   GITLAB_REPOSITORY: 'kargo-ci/kubernetes-sigs-kubespray'
-#  DOCKER_HOST: tcp://localhost:2375
+  # DOCKER_HOST: tcp://localhost:2375
   ANSIBLE_FORCE_COLOR: "true"
   MAGIC: "ci check this"
   TEST_ID: "$CI_PIPELINE_ID-$CI_BUILD_ID"
@@ -34,8 +35,8 @@ variables:
 # us-west1-a
 
 before_script:
-    - /usr/bin/python -m pip install -r tests/requirements.txt
-    - mkdir -p /.ssh
+  - /usr/bin/python -m pip install -r tests/requirements.txt
+  - mkdir -p /.ssh
 
 .job: &job
   tags:
@@ -45,7 +46,7 @@ before_script:
 
 .docker_service: &docker_service
   services:
-     - docker:dind
+    - docker:dind
 
 .create_cluster: &create_cluster
   <<: *job
@@ -232,95 +233,95 @@ before_script:
 
 # Test matrix. Leave the comments for markup scripts.
 .coreos_calico_aio_variables: &coreos_calico_aio_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu18_flannel_aio_variables: &ubuntu18_flannel_aio_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   MOVED_TO_GROUP_VARS: "true"
 
 .centos_weave_kubeadm_variables: &centos_weave_kubeadm_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   UPGRADE_TEST: "graceful"
 
 .ubuntu_canal_kubeadm_variables: &ubuntu_canal_kubeadm_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_canal_ha_variables: &ubuntu_canal_ha_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_contiv_sep_variables: &ubuntu_contiv_sep_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .coreos_cilium_variables: &coreos_cilium_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_cilium_sep_variables: &ubuntu_cilium_sep_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .rhel7_weave_variables: &rhel7_weave_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   MOVED_TO_GROUP_VARS: "true"
 
 .centos7_flannel_addons_variables: &centos7_flannel_addons_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   MOVED_TO_GROUP_VARS: "true"
 
 .debian9_calico_variables: &debian9_calico_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   MOVED_TO_GROUP_VARS: "true"
 
 .coreos_canal_variables: &coreos_canal_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   MOVED_TO_GROUP_VARS: "true"
 
 .rhel7_canal_sep_variables: &rhel7_canal_sep_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_weave_sep_variables: &ubuntu_weave_sep_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .centos7_calico_ha_variables: &centos7_calico_ha_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .centos7_kube_router_variables: &centos7_kube_router_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .centos7_multus_calico_variables: &centos7_multus_calico_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   UPGRADE_TEST: "graceful"
 
 .coreos_alpha_weave_ha_variables: &coreos_alpha_weave_ha_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .coreos_kube_router_variables: &coreos_kube_router_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_rkt_sep_variables: &ubuntu_rkt_sep_variables
-# stage: deploy-part1
+  # stage: deploy-part1
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_flannel_variables: &ubuntu_flannel_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   MOVED_TO_GROUP_VARS: "true"
 
 .ubuntu_kube_router_variables: &ubuntu_kube_router_variables
-# stage: deploy-special
+  # stage: deploy-special
   MOVED_TO_GROUP_VARS: "true"
 
 .opensuse_canal_variables: &opensuse_canal_variables
-# stage: deploy-part2
+  # stage: deploy-part2
   MOVED_TO_GROUP_VARS: "true"
 
 
@@ -727,7 +728,7 @@ yamllint:
   <<: *job
   stage: unit-tests
   script:
-    - yamllint roles
+    - yamllint .
   except: ['triggers', 'master']
 
 tox-inventory-builder: