serviceability/sa/ClhsdbScanOops.java can fail due to unexpected GC

serviceability/sa/ClhsdbScanOops.java#id0 and serviceability/sa/ClhsdbScanOops.java#id1 fail higher tiers in the loom repo, the test is not run with the jtreg wrapper.

java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'java/lang/Thread' missing from stdout/stderr

at ClhsdbScanOops.testWithGcType(ClhsdbScanOops.java:106)
at ClhsdbScanOops.main(ClhsdbScanOops.java:115)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:1496)
Caused by: java.lang.RuntimeException: 'java/lang/Thread' missing from stdout/stderr

at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:340)
at ClhsdbLauncher.runCmd(ClhsdbLauncher.java:166)
at ClhsdbLauncher.run(ClhsdbLauncher.java:203)
at ClhsdbScanOops.testWithGcType(ClhsdbScanOops.java:102)
... 5 more

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'java/lang/Thread' missing from stdout/stderr

JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'java/lang/Thread' missing from stdout/stderr