Fix failures of ansible-lint (#8401)

This fixes the following types of failures:
- empty-string-compare
- literal-compare
- risky-file-permissions
- risky-shell-pipe
- var-spacing

In addition, this changes .gitlab-ci/lint.yml to block the same issue
by using the same method at Kubespray CI.

roles/container-engine/cri-o/tasks/main.yaml

@@ -178,6 +178,7 @@
   template:
     src: unqualified.conf.j2
     dest: "/etc/containers/registries.conf.d/01-unqualified.conf"
+    mode: 0644
   notify: restart crio
 
 - name: Write cri-o proxy drop-in