使用kafka-reassign-partitions.sh重新对topic分区，ReplicationFactor由1变成3

  1、准备topics-to-move.json用于–topics-to-move-json-file
  2、准备output.json用于–reassignment-json-file
  3、
     bin/kafka-reassign-partitions.sh –zookeeper 127.0.0.1:2181 –topics-to-move-json-file topics-to-move.json –broker-list “0,1,2” –generate > output.json
     bin/kafka-reassign-partitions.sh –zookeeper 127.0.0.1:2181 –reassignment-json-file output.json –execute