[jdk11u-dev] RFR: 8317374: Add Let's Encrypt ISRG Root X2

[Goetz Lindenmaier]

On Wed, 15 Nov 2023 10:57:09 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> Unclean backport, but got resolved trivially. Pattern matching for switch isn't present in 11u. Test change in `VerifyCACerts.java` has slightly different context. Fixed those issues manually. Please review!
> 
> Testing:
> - [x] GHA
> - [x]  `test/jdk/sun/security/lib/cacerts` and `test/jdk/security/infra/java/security/cert/CertPathValidator` tests. All pass (including the new one `CAInterop.java#letsencryptisrgx2`

LGTM

Hint: if you base this on the 17u commit, only the CAInterop change remains. 
The other two changes, adapting the path and the hash, are identical.
You can use "Backport <17u hash>.
It's a bummer we always have to resolve the switch syntax.

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Marked as reviewed by goetz (Reviewer).

PR Review: https://git.openjdk.org/jdk11u-dev/pull/2280#pullrequestreview-1741712007