Support JDK-21 builds on Build and CI

[peterzhuamazon]

Support JDK-21 builds on Build and CI.

https://endoflife.date/oracle-jdk

JDK 20 is eol and we will need to support JDK21 from Temurin in both Core and Build/CI.

[peterzhuamazon]

Will work with @reta on this one.

[peterzhuamazon]

Waiting:

• Update Gradle to 8.4 OpenSearch#10138

[peterzhuamazon]

PRs:

Placeholder

[peterzhuamazon]

Several areas to update for this new JDK:

1. Jenkins tool
2. Docker images
3. AMIs
4. Gradle Check Workflow.

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We also need to have some sort of a meta / campaign so plugin owners can update their main branch with newer versions of the Gradle for JDK21 support.

Hi @reta would you mind create a campaign for that?
Thanks!

[reta]

@peterzhuamazon sure, opensearch-project/OpenSearch#10334, I will fill it up with per-plugin issues shortly, thanks!

[peterzhuamazon]

Waiting for Gradle 8.4 while temurin delayed 21:
https://adoptium.net/blog/2023/09/temurin21-delay/

[peterzhuamazon]

Will change global tools settings and remove deprecated JDK exports for Ubuntu once I onboard both gradle checks to container based setups.

#3816 (comment)

[peterzhuamazon]

• Update JDK-21 to JDK-21.0.1 on Jenkins #4172

[peterzhuamazon]

@reta awaiting:

• temurin: Add version 21 ScoopInstaller/Java#495

[peterzhuamazon]

• Restore old windows runner for gradle and update jdk21 opensearch-ci#367

[peterzhuamazon]

• DEB installation broke adoptium/adoptium-support#932

[peterzhuamazon]

• Ubuntu2004 update jdk installation steps per temurin website opensearch-ci#371

[peterzhuamazon]

Try one run: https://build.ci.opensearch.org/job/gradle-check/29304/console

[peterzhuamazon]

Windows can switch to temurin21 now:

• temurin: Add version 21 ScoopInstaller/Java#498

[peterzhuamazon]

• [META] Ensure JDK-21 (baseline) ecosystem readiness  OpenSearch#10334

[reta]

@peterzhuamazon I think we are done with CI, right?

[peterzhuamazon]

@peterzhuamazon I think we are done with CI, right?

I am using the opportunities of the ci-runner switch to update JDK21 on Windows to Temurin.

• Switch all active CI Docker Images to use ci-runner username for 1000 uid #4191

[peterzhuamazon]

All images have been updated to JDK21 with temurin distributions, except gradle check on Windows AMI.
That one can be taken care later on.

Thanks.