Set a default thread name for java.util.TimerThread #682
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Issue eclipse-openj9/openj9#11930
The name isn't set in the TimerThread constructor, it calls Thread.newName() which consumes the "Thread-0" name. This causes the test to fail because it expects this name. This could have an impact on / confuse users which expect consistent thread names. Depending on the timing of the Attach API AttachHandler / FilelockTimer creation, an application can get different default thread names from run to run.
Backport of ibmruntimes/openj9-openjdk-jdk#640