Fix ansible 2.14 incompatibility

The warn parameter of command/shell module was deprecated was
removed in 2.14[1].

[1] https://github.com/ansible/ansible/pull/77411

Closes-Bug: #1998098
Change-Id: If153ef72d9fbc0cbae7c1275ba866331f864995f
(cherry picked from commit 1ae0f58d97)

roles/repos/tasks/main.yml

@@ -3,8 +3,6 @@
   become: true
   shell: |
     {{ ansible_pkg_mgr }} repolist enabled -v 2>&1 || exit 0
-  args:
-    warn: false
   changed_when: false
   register: repositories