Improving yamllint configuration (#11389)

Signed-off-by: Bas Meijer <bas.meijer@enexis.nl>

roles/kubernetes-apps/krew/tasks/krew.yml

@@ -8,13 +8,13 @@
   template:
     src: krew.j2
     dest: /etc/bash_completion.d/krew
-    mode: 0644
+    mode: "0644"
 
 - name: Krew | Copy krew manifest
   template:
     src: krew.yml.j2
     dest: "{{ local_release_dir }}/krew.yml"
-    mode: 0644
+    mode: "0644"
 
 - name: Krew | Install krew  # noqa command-instead-of-shell
   shell: "{{ local_release_dir }}/krew-{{ host_os }}_{{ image_arch }} install --archive={{ local_release_dir }}/krew-{{ host_os }}_{{ image_arch }}.tar.gz --manifest={{ local_release_dir }}/krew.yml"
@@ -33,6 +33,6 @@
   copy:
     dest: /etc/bash_completion.d/krew.sh
     content: "{{ krew_completion.stdout }}"
-    mode: 0755
+    mode: "0755"
   become: True
   when: krew_completion.rc == 0