shell: volume.move cleans up when aborted after the copy phase (#10704)

* shell: volume.move restores source writability when aborted after the copy phase

* shell: volume.move removes the incomplete target copy when aborted before the source delete

* shell: give each abort cleanup RPC its own timeout

weed/shell/command_volume_copy.go

@@ -61,6 +61,6 @@ func (c *commandVolumeCopy) Do(args []string, commandEnv *CommandEnv, writer io.
 		return fmt.Errorf("source and target volume servers are the same!")
 	}
 
-	_, err = copyVolume(context.Background(), commandEnv.option.GrpcDialOption, writer, volumeId, sourceVolumeServer, targetVolumeServer, "", 0, true)
+	_, _, err = copyVolume(context.Background(), commandEnv.option.GrpcDialOption, writer, volumeId, sourceVolumeServer, targetVolumeServer, "", 0, true)
 	return
 }