update: ensure /var/lib/ceph/bootstrap-rbd-mirror is present

This directory is created by ceph-config node by node.
In the upgrade context we need it to be created on ALL monitors as soon
as the first iteration because of the task right after which creates and sends
the keyrings on all monitors.

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

infrastructure-playbooks/rolling_update.yml

@@ -222,6 +222,20 @@
       when:
         - containerized_deployment
 
+    - name: ensure /var/lib/ceph/bootstrap-rbd-mirror is present
+      file:
+        path: /var/lib/ceph/bootstrap-rbd-mirror
+        owner: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
+        group: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
+        mode: '755'
+        state: directory
+      when:
+        - cephx
+      delegate_to: "{{ item }}"
+      with_items: "{{ groups[mon_group_name] }}"
+      when:
+        - inventory_hostname == groups[mon_group_name][0]
+
     - name: create potentially missing keys (rbd and rbd-mirror)
       ceph_key:
         name: "client.{{ item.0 }}"