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

roles/kubernetes/master/tasks/kubeadm-setup.yml

@@ -3,7 +3,7 @@
   stat:
     path: "{{ kube_cert_dir }}/apiserver.pem"
   register: old_apiserver_cert
-  delegate_to: "{{groups['kube-master']|first}}"
+  delegate_to: "{{ groups['kube-master'] | first }}"
   run_once: true
 
 - name: kubeadm | Migrate old certs if necessary
@@ -41,14 +41,14 @@
 
 - name: kubeadm | Delete old static pods
   file:
-    path: "{{ kube_config_dir }}/manifests/{{item}}.manifest"
+    path: "{{ kube_config_dir }}/manifests/{{ item }}.manifest"
     state: absent
   with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler", "kube-proxy"]
   when:
     - old_apiserver_cert.stat.exists
 
 - name: kubeadm | Forcefully delete old static pods
-  shell: "docker ps -f name=k8s_{{item}} -q | xargs --no-run-if-empty docker rm -f"
+  shell: "docker ps -f name=k8s_{{ item }} -q | xargs --no-run-if-empty docker rm -f"
   with_items: ["kube-apiserver", "kube-controller-manager", "kube-scheduler"]
   when:
     - old_apiserver_cert.stat.exists
@@ -147,7 +147,7 @@
   retries: 5
   delay: 5
   until: temp_token is succeeded
-  delegate_to: "{{groups['kube-master']|first}}"
+  delegate_to: "{{ groups['kube-master'] | first }}"
   when: kubeadm_token is not defined
   tags:
     - kubeadm_token
@@ -190,6 +190,6 @@
 # FIXME(mattymo): from docs: If you don't want to taint your control-plane node, set this field to an empty slice, i.e. `taints: {}` in the YAML file.
 - name: kubeadm | Remove taint for master with node role
   command: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf taint node {{ inventory_hostname }} node-role.kubernetes.io/master:NoSchedule-"
-  delegate_to: "{{groups['kube-master']|first}}"
+  delegate_to: "{{ groups['kube-master'] | first }}"
   when: inventory_hostname in groups['kube-node']
   failed_when: false