docker: osd, do not skip on failure

If the systemd unit file can not be generated we should fail, same for
systemd enable and reload.

Signed-off-by: Sébastien Han <seb@redhat.com>

roles/ceph-osd/tasks/docker/start_docker_osd.yml

@@ -75,18 +75,15 @@
     owner: "root"
     group: "root"
     mode: "0644"
-  failed_when: false
 
 - name: enable systemd unit file for osd instance
   shell: systemctl enable ceph-osd@{{ item | basename }}.service
-  failed_when: false
   changed_when: false
   with_items: "{{ ceph_osd_docker_devices }}"
 
 - name: reload systemd unit files
   shell: systemctl daemon-reload
   changed_when: false
-  failed_when: false
 
 - name: systemd start osd container
   service: