Merge branch 'master' of http://10.1.235.20:3000/rest/rest-guide

comp-example/src/test/java/com/ai/ipu/example/kafka/KafkaCustomerExample.java

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import java.util.Arrays;
import java.util.Properties;

comp-example/src/test/java/com/ai/ipu/example/kafka/KafkaProducerExample.java

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerRecord;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Scanner;

comp-example/src/test/java/com/ai/ipu/example/rocketmq/RocketMQProducerExample.java

        producer.setVipChannelEnabled(false);
        producer.setNamesrvAddr("47.105.160.21:9876");
        producer.start();
        try {
            Scanner sc = new Scanner(System.in);
            int i = 0;