Fix krew auto completion command not found at lower version (#8185)

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

@@ -25,9 +25,11 @@
   changed_when: False
   register: krew_completion
   check_mode: False
+  ignore_errors: yes  # noqa ignore-errors
 
 - name: Krew | Install krew completion
   copy:
     dest: /etc/bash_completion.d/krew.sh
     content: "{{ krew_completion.stdout }}"
   become: True
+  when: krew_completion.rc == 0