Merge "Fix exception when doing volume set operation"

Author: Jenkins

openstackclient/volume/v2/volume.py

@@ -326,7 +326,7 @@ def _format_attach(attachments):
                 ) for s in data))
 
 
-class SetVolume(show.ShowOne):
+class SetVolume(command.Command):
     """Set volume properties"""
 
     log = logging.getLogger(__name__ + '.SetVolume')