Problem Summary:
The [External hive
CI](http://43.132.222.7:8111/buildConfiguration/Doris_External_Regression/612304?buildTab=log&linesState=3650&logView=flowAware)
failed because of `namenode` error( 50070 port already in used), docker
logs:
```txt
2025-01-21T04:22:37.955682469Z java.net.BindException: Port in use: 0.0.0.0:50070
2025-01-21T04:22:37.955686106Z at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:940)
2025-01-21T04:22:37.955689402Z at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:876)
2025-01-21T04:22:37.955692708Z at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:142)
2025-01-21T04:22:37.955697828Z at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:760)
2025-01-21T04:22:37.955701444Z at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:639)
2025-01-21T04:22:37.955704831Z at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:819)
2025-01-21T04:22:37.955708237Z at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:803)
2025-01-21T04:22:37.955711674Z at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1500)
2025-01-21T04:22:37.955715090Z at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1566)
2025-01-21T04:22:37.955718446Z Caused by: java.net.BindException: Address already in use
2025-01-21T04:22:37.955722013Z at sun.nio.ch.Net.bind0(Native Method)
2025-01-21T04:22:37.955725460Z at sun.nio.ch.Net.bind(Net.java:433)
2025-01-21T04:22:37.955729227Z at sun.nio.ch.Net.bind(Net.java:425)
2025-01-21T04:22:37.955733074Z at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
2025-01-21T04:22:37.955736600Z at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
2025-01-21T04:22:37.955740197Z at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
2025-01-21T04:22:37.955743884Z at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:934)
2025-01-21T04:22:37.955747391Z ... 8 more
2025-01-21T04:22:37.961686454Z 25/01/21 04:22:37 INFO util.ExitUtil: Exiting with status 1
```
The best choice is avoid the services using server port at range
`/proc/sys/net/ipv4/ip_local_port_range` (32768-60999). But since the
namenode [hardcode exposing port `50070` in docker
image](https://hub.docker.com/layers/bde2020/hadoop-datanode/2.0.0-hadoop2.7.4-java8/images/sha256-5623fca5e36d890983cdc6cfd29744d1d65476528117975b3af6a80d99b3c62f),
so we add the port to `net.ipv4.ip_local_reserved_ports` and introduce a
new flags `--reserve-ports` to control it (default false, because not
everyone want to modify system reserved ports).
Change-Id: I03a81e9931cb555695199436b6f0517cccf83588
baaf026e82