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

roles/kubernetes/preinstall/tasks/0020-verify-settings.yml

@@ -35,7 +35,7 @@
 - name: "Stop if known booleans are set as strings (Use JSON format on CLI: -e \"{'key': true }\")"
   assert:
     that: item.value|type_debug == 'bool'
-    msg: "{{item.value}} isn't a bool"
+    msg: "{{ item.value }} isn't a bool"
   run_once: yes
   with_items:
     - { name: download_run_once, value: "{{ download_run_once }}" }