Fix risky-file-permissions (#8370)

When running ansible-lint directly, we can see a lot of warning
message like

  risky-file-permissions File permissions unset or incorrect

This fixes the warning messages.

roles/kubernetes-apps/policy_controller/calico/tasks/main.yml

@@ -12,6 +12,7 @@
   template:
     src: "{{ item.file }}.j2"
     dest: "{{ kube_config_dir }}/{{ item.file }}"
+    mode: 0644
   with_items:
     - {name: calico-kube-controllers, file: calico-kube-controllers.yml, type: deployment}
     - {name: calico-kube-controllers, file: calico-kube-sa.yml, type: sa}