fix: add other two zookeepers to KAFKA_ZOOKEEPER_CONNECT in zk-multiple-kafka-single,yml (#42)

Author: devshawn

zk-multiple-kafka-single.yml

@@ -50,7 +50,7 @@ services:
       KAFKA_ADVERTISED_LISTENERS: LISTENER_DOCKER_INTERNAL://kafka1:19092,LISTENER_DOCKER_EXTERNAL://${DOCKER_HOST_IP:-127.0.0.1}:9092
       KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: LISTENER_DOCKER_INTERNAL:PLAINTEXT,LISTENER_DOCKER_EXTERNAL:PLAINTEXT
       KAFKA_INTER_BROKER_LISTENER_NAME: LISTENER_DOCKER_INTERNAL
-      KAFKA_ZOOKEEPER_CONNECT: "zoo1:2181"
+      KAFKA_ZOOKEEPER_CONNECT: "zoo1:2181,zoo2:2182,zoo3:2183"
       KAFKA_BROKER_ID: 1
       KAFKA_LOG4J_LOGGERS: "kafka.controller=INFO,kafka.producer.async.DefaultEventHandler=INFO,state.change.logger=INFO"
       KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1