[jdk17u-dev] RFR: 8357173: Split jtreg test group jdk tier3

[Goetz Lindenmaier]

On Sun, 3 Aug 2025 18:54:22 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> I backport this for parity with 17.0.17-oracle.
> 
> Resolved copyright, probably clean anyways.

GHA failure: unrelated.
corss compile failures fixed by JDK-8363965: GHA: Switch cross-compiling sysroots to Debian bookworm

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/3806#issuecomment-3152112155