RFR: 8323519: Add applications/ctw/modules to Hotspot tiered testing

[Vladimir Kozlov]

On Wed, 10 Jan 2024 13:43:23 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Noticed that `applications/ctw/modules` is missing from current `tier{1,2,3,4}` hotspot definitions, since tier4 specifically excludes all applications. That exclusion was due to potentially unprepared dependencies that are needed for testing: for example jcstress tests would fail with the default configuration. But CTW for JDK modules works well out of the box, so we can add it somewhere in high tier, for example tier3. It should be useful to catch compiler bugs early, before running `hotspot:all`.
> 
> These tests take quite a bit of time (~15 mins on my M1), so I opted to add them to relevant "slow" group that is run in tier3.
> 
> Additional testing:
>  - [x] Checked that `tier3_compiler` runs CTW tests

This will duplicate testing for us in Oracle.
Please, add it directly to `tier3_compiler` group instead.

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Changes requested by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17348#pullrequestreview-1814114298