update: followup on pr ceph#6689

add mising 'osd' command.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

infrastructure-playbooks/rolling_update.yml

@@ -1056,7 +1056,7 @@
 
     - block:
         - name: switch crush buckets to straw2
-          command: "{{ ceph_cmd }} --cluster {{ cluster }} crush set-all-straw-buckets-to-straw2"
+          command: "{{ ceph_cmd }} --cluster {{ cluster }} osd crush set-all-straw-buckets-to-straw2"
           changed_when: false
       rescue:
         - name: restore the crushmap