STF test times out when daylight savings time changes

https://ci.eclipse.org/openj9/job/Test_openjdk8_j9_special.system_s390x_linux_Nightly/635
DaaLoadTest_all_special_27
variation: Mode612-OSRG
JVM_OPTIONS: -Xcompressedrefs -Xcompressedrefs -Xgcpolicy:gencon -Xjit:enableOSR,enableOSROnGuardFailure,count=1,disableAsyncCompilation

1.DLT.stdout shows both threads completed testing.
```
02:00:25.476 - Completed 98.5%. Number of tests started=709 (+638)
02:00:34.346 - Thread completed. Suite=0 thread=1
02:00:44.459 - Completed 100.0%. Number of tests started=720 (+11)
02:00:47.471 - Thread completed. Suite=0 thread=0
02:00:47.533 - Load test completed
02:00:47.533 - Ran : 720
02:00:47.533 - Passed : 720
02:00:47.533 - Failed : 0
02:00:47.533 - Result : PASSED
```
However a timeout occurred.
```
STF 02:00:00.066 - **FAILED** Process DLT has timed out
STF 02:00:00.066 - Collecting dumps for: DLT
```
Looking at the javacore's collected, tests are still running. There is movement between the first javacore and the second.
```
3XMTHREADINFO "load-0" J9VMThread:0x000000000011B300, omrthread_t:0x000003FF4000B418, java/lang/Thread:0x000000000C95F5C8, state:R, prio=5
3XMJAVALTHREAD (java/lang/Thread getId:0x16, isDaemon:false)
3XMTHREADINFO1 (native thread ID:0x43E, native priority:0x5, native policy:UNKNOWN, vmstate:CW, vm thread flags:0x00000081)
3XMTHREADINFO2 (native stack address range from:0x000003FFACC40000, to:0x000003FFACC80000, size:0x40000)
3XMCPUTIME CPU usage total: 16.574560896 secs, current category="Application"
3XMHEAPALLOC Heap bytes allocated since last GC cycle=2591864 (0x278C78)
3XMTHREADINFO3 Java callstack:
4XESTACKTRACE at java/math/BigInteger.implSquareToLen(BigInteger.java:2079(Compiled Code))
4XESTACKTRACE at java/math/BigInteger.squareToLen(BigInteger.java:2012(Compiled Code))
4XESTACKTRACE at java/math/BigInteger.square(BigInteger.java:1981(Compiled Code))
4XESTACKTRACE at java/math/BigInteger.square(BigInteger.java:1964(Compiled Code))
4XESTACKTRACE at java/math/BigInteger.pow(BigInteger.java:2407(Compiled Code))
4XESTACKTRACE at java/math/BigDecimal.(BigDecimal.java:934(Compiled Code))
4XESTACKTRACE at java/math/BigDecimal.(BigDecimal.java:875(Compiled Code))
4XESTACKTRACE at net/openj9/test/decimals/TestBD2PD2BD.generateRandomBigDecimal(TestBD2PD2BD.java:582(Compiled Code))
4XESTACKTRACE at net/openj9/test/decimals/TestBD2PD2BD.testBigInteger(TestBD2PD2BD.java:491(Compiled Code))
4XESTACKTRACE at sun/reflect/GeneratedMethodAccessor745.invoke(Bytecode PC:36(Compiled Code))
4XESTACKTRACE at sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43(Compiled Code))
4XESTACKTRACE at java/lang/reflect/Method.invoke(Method.java:498(Compiled Code))
4XESTACKTRACE at org/junit/runners/model/FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/model/ReflectiveCallable.run(ReflectiveCallable.java:12(Compiled Code))
4XESTACKTRACE at org/junit/runners/model/FrameworkMethod.invokeExplosively(FrameworkMethod.java:47(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/InvokeMethod.evaluate(InvokeMethod.java:17(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/RunBefores.evaluate(RunBefores.java:26(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/RunAfters.evaluate(RunAfters.java:27(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runLeaf(ParentRunner.java:325(Compiled Code))
4XESTACKTRACE at org/junit/runners/BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78(Compiled Code))
4XESTACKTRACE at org/junit/runners/BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$3.run(ParentRunner.java:290(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$1.schedule(ParentRunner.java:71(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runChildren(ParentRunner.java:288(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.access$000(ParentRunner.java:58(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$2.evaluate(ParentRunner.java:268(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.run(ParentRunner.java:363(Compiled Code))
4XESTACKTRACE at org/junit/runners/Suite.runChild(Suite.java:128(Compiled Code))
4XESTACKTRACE at org/junit/runners/Suite.runChild(Suite.java:27(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$3.run(ParentRunner.java:290(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$1.schedule(ParentRunner.java:71(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runChildren(ParentRunner.java:288(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.access$000(ParentRunner.java:58(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$2.evaluate(ParentRunner.java:268(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.run(ParentRunner.java:363(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.run(JUnitCore.java:137(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.run(JUnitCore.java:115(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.run(JUnitCore.java:105(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.runClasses(JUnitCore.java:62(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.runClasses(JUnitCore.java:49(Compiled Code))
4XESTACKTRACE at net/openj9/test/BasicTestRunner.runClass(BasicTestRunner.java:41(Compiled Code))
4XESTACKTRACE at net/openj9/test/decimals/DecimalTestRunner.runTests(DecimalTestRunner.java:53(Compiled Code))
4XESTACKTRACE at net/openj9/test/decimals/DecimalTestRunner.invokeTest(DecimalTestRunner.java:37(Compiled Code))
4XESTACKTRACE at sun/reflect/GeneratedMethodAccessor1060.invoke(Bytecode PC:20(Compiled Code))
4XESTACKTRACE at sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43(Compiled Code))
4XESTACKTRACE at java/lang/reflect/Method.invoke(Method.java:498(Compiled Code))
4XESTACKTRACE at net/adoptopenjdk/loadTest/adaptors/ArbitraryJavaAdaptor.executeTest(ArbitraryJavaAdaptor.java:102(Compiled Code))
4XESTACKTRACE at net/adoptopenjdk/loadTest/LoadTestRunner$2.run(LoadTestRunner.java:182)
4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149(Compiled Code))
4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
4XESTACKTRACE at java/lang/Thread.run(Thread.java:819)
```
```
3XMTHREADINFO "load-1" J9VMThread:0x00000000003A3500, omrthread_t:0x000003FF4000B910, java/lang/Thread:0x000000000C880278, state:R, prio=5
3XMJAVALTHREAD (java/lang/Thread getId:0x17, isDaemon:false)
3XMTHREADINFO1 (native thread ID:0x43F, native priority:0x5, native policy:UNKNOWN, vmstate:CW, vm thread flags:0x00000081)
3XMTHREADINFO2 (native stack address range from:0x000003FFAC7C0000, to:0x000003FFAC800000, size:0x40000)
3XMCPUTIME CPU usage total: 14.251473317 secs, current category="Application"
3XMHEAPALLOC Heap bytes allocated since last GC cycle=20013608 (0x1316228)
3XMTHREADINFO3 Java callstack:
4XESTACKTRACE at com/ibm/dataaccess/DecimalData.convertPackedDecimalToBigInteger(DecimalData.java:1274(Compiled Code))
4XESTACKTRACE at net/openj9/test/decimals/TestDecimalData.testConvertBigIntegerNormals(TestDecimalData.java:4195(Compiled Code))
4XESTACKTRACE at sun/reflect/GeneratedMethodAccessor762.invoke(Bytecode PC:36(Compiled Code))
4XESTACKTRACE at sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43(Compiled Code))
4XESTACKTRACE at java/lang/reflect/Method.invoke(Method.java:498(Compiled Code))
4XESTACKTRACE at org/junit/runners/model/FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/model/ReflectiveCallable.run(ReflectiveCallable.java:12(Compiled Code))
4XESTACKTRACE at org/junit/runners/model/FrameworkMethod.invokeExplosively(FrameworkMethod.java:47(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/InvokeMethod.evaluate(InvokeMethod.java:17(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runLeaf(ParentRunner.java:325(Compiled Code))
4XESTACKTRACE at org/junit/runners/BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78(Compiled Code))
4XESTACKTRACE at org/junit/runners/BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$3.run(ParentRunner.java:290(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$1.schedule(ParentRunner.java:71(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runChildren(ParentRunner.java:288(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.access$000(ParentRunner.java:58(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$2.evaluate(ParentRunner.java:268(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/RunBefores.evaluate(RunBefores.java:26(Compiled Code))
4XESTACKTRACE at org/junit/internal/runners/statements/RunAfters.evaluate(RunAfters.java:27(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.run(ParentRunner.java:363(Compiled Code))
4XESTACKTRACE at org/junit/runners/Suite.runChild(Suite.java:128(Compiled Code))
4XESTACKTRACE at org/junit/runners/Suite.runChild(Suite.java:27(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$3.run(ParentRunner.java:290(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$1.schedule(ParentRunner.java:71(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.runChildren(ParentRunner.java:288(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.access$000(ParentRunner.java:58(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner$2.evaluate(ParentRunner.java:268(Compiled Code))
4XESTACKTRACE at org/junit/runners/ParentRunner.run(ParentRunner.java:363(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.run(JUnitCore.java:137(Compiled Code))
4XESTACKTRACE at org/junit/runner/JUnitCore.run(JUnitCore.java:115(Compiled Code))
4XESTACKTRACE at net/adoptopenjdk/loadTest/adaptors/JUnitAdaptor.executeTest(JUnitAdaptor.java:130(Compiled Code))
4XESTACKTRACE at net/adoptopenjdk/loadTest/LoadTestRunner$2.run(LoadTestRunner.java:182(Compiled Code))
4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149(Compiled Code))
4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624(Compiled Code))
4XESTACKTRACE at java/lang/Thread.run(Thread.java:819(Compiled Code))
```

Start with the STF failure in the Test_openjdk8_j9_special.system_s390x_linux_Nightly job for DaaLoadTest_all_special_27, then compare its timeout handling with the completed DLT output and javacores. Read the cited TestBD2PD2BD and TestDecimalData call paths alongside the STF logs. Done means the daylight-saving transition no longer produces a false timeout while the tests are still progressing or complete.

Written by the indexing model from the issue text.