aws java sdk force v2 signing for s3 compatible storage

V2sign.java

	public static void main(String[] args) {
        ClientConfiguration clientConf = new ClientConfiguration();
        clientConf.withSignerOverride("S3SignerType");
        
        AWSCredentials myCredentials = new BasicAWSCredentials("XX", "DD");
        client = new AmazonS3Client(myCredentials, clientConf);
        client.setEndpoint("http://s3.com");

    		ObjectMetadata metadata = new ObjectMetadata();
    		metadata.setContentType("application/octet-stream");
    		InputStream data = new ByteArrayInputStream("qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq".getBytes(StandardCharsets.UTF_8));

      	client.putObject("test", "qq", data, metadata);
	}