Fix the error of TestDynamometerInfra

[INFO] Running org.apache.hadoop.tools.dynamometer.TestDynamometerInfra
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.43 s <<< FAILURE! - in org.apache.hadoop.tools.dynamometer.TestDynamometerInfra
[ERROR] org.apache.hadoop.tools.dynamometer.TestDynamometerInfra  Time elapsed: 0.43 s  <<< ERROR!
java.io.FileNotFoundException: http://mirrors.ocf.berkeley.edu/apache/hadoop/common/hadoop-3.1.3/hadoop-3.1.3.tar.gz
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1896)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
	at org.apache.commons.io.FileUtils.copyURLToFile(FileUtils.java:1506)
	at org.apache.hadoop.tools.dynamometer.DynoInfraUtils.fetchHadoopTarball(DynoInfraUtils.java:151)
	at org.apache.hadoop.tools.dynamometer.TestDynamometerInfra.setupClass(TestDynamometerInfra.java:176)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)