HDDS-15868. Enable dynamic agent loading for tests

[prathmesh12-coder]

What changes were proposed in this pull request?

• In JDK 21, the JVM still allows dynamic agent loading, but emits a warning :

WARNING: A Java agent has been loaded dynamically (file:/u/bob/agent.jar)
WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning
WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information
WARNING: Dynamic loading of agents will be disallowed by default in a future release

• In a future JDK release, dynamic agent loading will be disallowed by default. see (JEP 451)
• In future release, dynamically loading an agent without -XX:+EnableDynamicAgentLoading may cause an exception to be thrown:

com.sun.tools.attach.AgentLoadException: Failed to load agent library: 
Dynamic agent loading is not enabled. Use -XX:+EnableDynamicAgentLoading 
to launch target VM.

• Ozone unit tests use Mockito inline (mock-maker-inline), which causes ByteBuddy to dynamically attach its agent during Surefire runs. That triggers these warnings on JDK 21+
• Added -XX:+EnableDynamicAgentLoading to maven-surefire-plugin.argLine in the root pom.xml which suppresses the JDK 21+ dynamic-agent warnings

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-15868

How was this patch tested?

• Manually tested :

  • reproduced :

    mvn -pl :hdds-container-service test -Dtest=TestStorageVolumeChecker -DskipShade -DskipRecon -DskipDocs
    

  • .../surefire-reports/*TestStorageVolumeChecker-output.txt contained dynamic-agent warnings shown above

    psapate@CWJC2KR9DP ozone % grep -A3 "Java agent has been loaded dynamically" hadoop-hdds/container-service/target/surefire-reports/*TestStorageVolumeChecker-output.txt
    
    WARNING: A Java agent has been loaded dynamically (/Users/psapate/.m2/repository/net/bytebuddy/byte-buddy-agent/1.18.11/byte-buddy-agent-1.18.11.jar)
    WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning
    WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information
    WARNING: Dynamic loading of agents will be disallowed by default in a future release
    

  • after adding the -XX:+EnableDynamicAgentLoading to maven-surefire-plugin.argLine in the root pom.xml same command no longer emits those warnings and all 20 tests pass.

    psapate@CWJC2KR9DP ozone % grep -A3 "Java agent has been loaded dynamically" hadoop-hdds/container-service/target/surefire-reports/*TestStorageVolumeChecker-output.txt
    

• CI success : https://github.com/prathmesh12-coder/ozone/actions/runs/29682107246

[anuragp010]

Change looks good 👍