<fix>[cephbackupstorage]: ceph bs add image and image url contains chinese
<fix>[cephbackupstorage]: ceph bs add image and image url contains chinese

Resolves: ZSTAC-49204

Change-Id: I6d73676c6967677668646663656d77757862626c

zstackio/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility