RFR: 8266130: convert Thread-SMR stress tests from counter based to time based [v2]

[Chris Plummer]

On Mon, 7 Jun 2021 15:17:36 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>  @dholmes-ora and @plummercj - You both reviewed the related test work done in:
> JDK-8265153 add time based test for ThreadMXBean.getThreadInfo() and ThreadInfo.getLockOwnerName()
> Any chance you have the cycles for these updates this week?

Yes. Hopefully in the next day or two.

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PR: https://git.openjdk.java.net/jdk/pull/4237