jdk14: init (restore)

[roberth]

Motivation for this change

It was removed incompletely, while some packages do not support
jdk15 yet, one of them being logstash.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[flokli]

We shouldn't be packaging Java 14 (at least not while marking it as insecure) - it stopped getting security updates in September 2020.

According to their website, logstash should work with openjdk11 too. (which still gets security updates till October 2024 (for AdoptOpenJDK).

@roberth which other packages regressed? I'd prefer if we'd use jdk 11 for those instead of re-introducing an insecure JDK version.

Also cc @jerith666 due to 13e3d2b.

[roberth]

I thought jdk14 was removed by mistake. #107547 did not have a motivation section.

[flokli]

Yeah, true. Do you think we can switch logstash to openjdk11?

[roberth]

According to logstash docs, yes. See #116936
I also noticed #116935