cloud drive: add support for Baidu BOS

weed/remote_storage/s3/aliyun.go

@@ -27,15 +27,16 @@ func (s AliyunRemoteStorageMaker) Make(conf *filer_pb.RemoteConf) (remote_storag
 
 	config := &aws.Config{
 		Endpoint:         aws.String(conf.AliyunEndpoint),
+		Region:           aws.String(conf.AliyunRegion),
 		S3ForcePathStyle: aws.Bool(false),
 	}
-	if conf.AliyunAccessKey != "" && conf.AliyunSecretKey != "" {
+	if accessKey != "" && secretKey != "" {
 		config.Credentials = credentials.NewStaticCredentials(accessKey, secretKey, "")
 	}
 
 	sess, err := session.NewSession(config)
 	if err != nil {
-		return nil, fmt.Errorf("create aws session: %v", err)
+		return nil, fmt.Errorf("create aliyun session: %v", err)
 	}
 	client.conn = s3.New(sess)
 	return client, nil