Benchmark does not use leak detector levels

[pderop]

Expected behavior

JMH test is currently running without any leak detector levels.
Now, in the old version, tests were run for each leak detector levels, so it would be nice if we could do the same for the new version.

But there is a work around: If you want to enable any leak detector levels, you must then recompile the benchmark and adapt the @fork annotation with some custom jvm options:

@Fork(jvmArgsAppend = {"-dsa",
        "-da",
        "-XX:+HeapDumpOnOutOfMemoryError",
        "-XX:+UnlockDiagnosticVMOptions",
        "-XX:+DebugNonSafepoints",
        "-Dio.netty5.leakDetection.level=disabled",        // changed to paranoid for detecting buffer leaks
        "-Dio.netty5.buffer.leakDetectionEnabled=false",   // changed to true for detecting buffer leaks
        "-Dio.netty5.buffer.lifecycleTracingEnabled=false" // changed to true for detecting buffer leaks
})

Actual behavior

Steps to reproduce

Minimal yet complete reproducer code (or URL to code)

Netty version

JVM version (e.g. java -version)

OS version (e.g. uname -a)