shrink-osd: (ceph-disk only) remove prepare container

When shrinking an OSD, its corresponding 'prepare container' should be
removed otherwise it prevent from redeploying a new osd because of this
leftover.

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

infrastructure-playbooks/shrink-osd-ceph-disk.yml

@@ -177,6 +177,15 @@
       when:
         - containerized_deployment
 
+    - name: remove prepare container
+      command: docker rm ceph-osd-prepare-"{{ hostvars[item.1]['ansible_hostname'] }}"-"{{ item.0.stdout }}"
+      delegate_to: "{{ item.1 }}"
+      with_together:
+        - "{{ resolved_parent_device.results }}"
+        - "{{ osd_hosts }}"
+      when:
+        - containerized_deployment
+
     - name: zap ceph osd partitions from dedicated devices
       shell: |
         for osd in {{ ' '.join(item.1.stdout_lines) }}