ansible-lint: add spaces around variables [E206] (#4699)

.ansible-lint

cluster.yml

contrib/azurerm/roles/generate-inventory/tasks/main.yml

contrib/azurerm/roles/generate-inventory_2/tasks/main.yml

contrib/azurerm/roles/generate-templates/tasks/main.yml

contrib/dind/roles/dind-cluster/tasks/main.yaml

contrib/dind/roles/dind-host/tasks/main.yaml

contrib/metallb/roles/provision/tasks/main.yml

...age/glusterfs/roles/kubernetes-pv/ansible/tasks/main.yaml

...storage/heketi/roles/provision/tasks/bootstrap/deploy.yml

...torage/heketi/roles/provision/tasks/bootstrap/storage.yml

...etwork-storage/heketi/roles/provision/tasks/glusterfs.yml

...b/network-storage/heketi/roles/provision/tasks/heketi.yml

...rib/network-storage/heketi/roles/provision/tasks/main.yml

...b/network-storage/heketi/roles/provision/tasks/secret.yml

.../network-storage/heketi/roles/provision/tasks/storage.yml

...ork-storage/heketi/roles/provision/tasks/storageclass.yml

contrib/vault/roles/vault/tasks/shared/check_etcd.yml

mitogen.yaml

roles/adduser/tasks/main.yml