Add the OpenJDK JDK reference implementation

Description:
Add the OpenJDK JDK distribution.

Justification:
It's the reference implementation and also the basis of the project variants (jextract, Valhalla, Leyden,...), but is not listed in https://github.com/actions/setup-java#supported-distributions.

Download URL:
jdk.java.net

License:
https://openjdk.org/legal/gplv2+ce.html

Are you willing to submit a PR?
No

@nlisker

Hi @nlisker,
Thank you for creating this feature request. We will investigate it and provide feedback as soon as we have some updates.

@nlisker

@nlisker this would only cover Oracle OpenJDK builds that are, at most, produced with two security updates.

@nlisker this would only cover Oracle OpenJDK builds that are, at most, produced with two security updates.

https://jdk.java.net/archive/

I think that if the latest minor/patch of each major version is supported then it should be fine. Is that what you are saying?

Sunbelt Computer Software