RFR: 8320858: Move jpackage tests to tier3

[Alexey Semenyuk]

On Tue, 28 Nov 2023 08:51:17 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> Update the jtreg test group configuration in the jdk test tree so that the jpackage tests run in tier3 rather than tier2.
> 
> At this time, the jpackage tests run in jdk:tier2, more specifically jdk:tier2_part2 as part of the core_tools test group. The  jpackage tests take a significant amount of time on some platforms (on macOS and Windows in particular). The changes here remove tools/jpackage from core_tools (it's not a core tool anyway) and adds the tests to tier3. In the future then maybe tier3 can be split up if needed.

Marked as reviewed by asemenyuk (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16841#pullrequestreview-1753718659