cephadm-adopt: use named args in rgw export creation

In order to avoid breaking changes, let's use named argument
instead of positional argument syntax in the command line
used to create rgw export.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2037691

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit aee1f06)

infrastructure-playbooks/cephadm-adopt.yml

@@ -1100,7 +1100,7 @@
       when: bucket_list.skipped is undefined
 
     - name: create rgw export
-      command: "{{ cephadm_cmd }} shell --fsid {{ fsid }} -- ceph --cluster {{ cluster }} nfs export create rgw {{ item }} {{ ansible_facts['hostname'] }} {{ ceph_nfs_rgw_pseudo_path }} --squash {{ ceph_nfs_rgw_squash }}"
+      command: "{{ cephadm_cmd }} shell --fsid {{ fsid }} -- ceph --cluster {{ cluster }} nfs export create rgw --cluster-id {{ ansible_facts['hostname'] }} --bucket {{ item.split('/')[-1] }} --pseudo-path {{ ceph_nfs_rgw_pseudo_path }} --squash {{ ceph_nfs_rgw_squash }}"
       changed_when: false
       delegate_to: "{{ groups[mon_group_name][0] }}"
       environment: