eb10e43782
https://developer.openstack.org/api-ref/block-storage/v3/index.html?expanded=set-image-metadata-for-a-volume-detail#set-image-metadata-for-a-volume "Set image metadata for a volume" interface has response body, so this is to add response parameter and response example for it. Change-Id: I8139fd557cb3123dd71ab104e7e36546b862e345