6815126: intermittent SimulResumerTest.java failure

[sendaoYan]

Hi all,

This is clean backport to fix the test bug, which cause test intermittent fails.

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• I confirm that I make this contribution in accordance with the OpenJDK Interim AI Policy.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-6815126 needs maintainer approval

Error

 ⚠️ Pull request body is missing required line: - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).

Issue

• JDK-6815126: intermittent SimulResumerTest.java failure (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk8u-dev.git pull/806/head:pull/806
$ git checkout pull/806

Update a local copy of the PR:
$ git checkout pull/806
$ git pull https://git.openjdk.org/jdk8u-dev.git pull/806/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 806

View PR using the GUI difftool:
$ git pr show -t 806

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk8u-dev/pull/806.diff

[bridgekeeper]

👋 Welcome back syan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.