serviceability/sa/TestClassDump.java fails in OpenJDK build as it is not able to find the class /jdk/internal/vm/PostVMInitHook.

java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: jtreg_classes2/jdk/internal/vm/PostVMInitHook.class not found
at TestClassDump.main(TestClassDump.java:98)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.lang.RuntimeException: jtreg_classes2/jdk/internal/vm/PostVMInitHook.class not found
at TestClassDump.dumpClass(TestClassDump.java:80)
at TestClassDump.main(TestClassDump.java:96)
... 6 more

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: jtreg_classes2/jdk/internal/vm/PostVMInitHook.class not found
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: jtreg_classes2/jdk/internal/vm/PostVMInitHook.class not found