filestore-to-bluestore: umount partitions before zapping them

When an OSD is stopped, it leaves partitions mounted.
We must umount them before zapping them, otherwise error like "Device is
busy" will show up.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1729267

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit 8056514134)

infrastructure-playbooks/filestore-to-bluestore.yml

@@ -84,6 +84,24 @@
             - "{{ partlabel.results }}"
           when: item.1.stdout == 'ceph data'
 
+        - name: umount osd data
+          mount:
+            path: "/var/lib/ceph/osd/{{ cluster }}-{{ (item.0.stdout | from_json).whoami }}"
+            state: unmounted
+          with_together:
+            - "{{ simple_scan.results }}"
+            - "{{ partlabel.results }}"
+          when: item.1.stdout == 'ceph data'
+
+        - name: umount osd lockbox
+          mount:
+            path: "/var/lib/ceph/osd-lockbox/{{ (item.0.stdout | from_json).data.uuid }}"
+            state: unmounted
+          with_together:
+            - "{{ simple_scan.results }}"
+            - "{{ partlabel.results }}"
+          when: item.1.stdout == 'ceph data'
+
         - name: ensure dmcrypt for data device is closed
           command: cryptsetup close "{{ (item.0.stdout | from_json).data.uuid }}"
           with_together: