Fix reset rescue skipping pod cleanup when there are no network namespaces (#13632)

With an empty 'ip netns list' (the common case), xargs without -r still
runs 'ip netns delete' once with no argument. That fails, so the && chain
short-circuits and 'crictl rmp -a -f' never runs: the rescue path leaves
the pod sandboxes behind, which is exactly what it is there to clean up.
Other tasks in the same file already use xargs -r.

roles/reset/tasks/main.yml

@@ -131,7 +131,7 @@
 
   rescue:
     - name: Reset | force remove all cri pods (rescue)
-      shell: "ip netns list | cut -d' ' -f 1 | xargs -n1 ip netns delete && {{ bin_dir }}/crictl rmp -a -f"
+      shell: "ip netns list | cut -d' ' -f 1 | xargs -r -n1 ip netns delete && {{ bin_dir }}/crictl rmp -a -f"
       ignore_errors: true  # noqa ignore-errors
       changed_when: true