**Reduce disk usage in jlink tests** Several jlink tests accumulate large image directories on disk without cleaning them up, causing significant disk space usage - especially in fastdebug builds where images include big native debug symbols. This change addresses that in three ways:
Image size reduction: Added `--strip-debug` to jlink invocations in ~30 test files where it is safe to do so (i.e. the test only checks functional correctness - module presence, exit codes, stdout but not further things like binary equality). Tests that compare images byte-for-byte `(JLinkReproducible*, PackagedModulesVsRuntimeImageLinkTest`) are unchanged. Per-test cleanup: Added `@AfterEach/@AfterMethod` cleanup to JUnit 5 and TestNG tests that create multiple images (`IncludeLocalesPluginTest, GenerateJLIClassesPluginTest, LegalFilePluginTest, ExcludeJmodSectionPluginTest, UserModuleTest and JLinkTest`). This reduce disk pressure by deleting no longer needed images. Intermediate image cleanup in `AbstractLinkableRuntimeTest` tests: `AbstractLinkableRuntimeTest.createJavaImageRuntimeLink()` now deletes the intermediate linkable-runtime JDK image immediately after it has been used to produce the final output image. And `createRuntimeLinkImage()` deletes the --generate-linkable-runtime temporary image as soon as it has been copied. This reduces peak disk usage in JavaSEReproducibleTest and other `AbstractLinkableRuntimeTest` subclasses from 6 simultaneous images to 2. `JLinkReproducible2Test` and `JLinkReproducible3Test` also sequence their image pairs so at most one pair exists at a time. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Delete intermediate images in AbstractLinkableRuntimeTest this will improve several tests. - Reduce disk usage of JLinkReproducible2Test - Reduce disk usage by deleting copied jdks directly after jlink calls - only created images are compared - Modify 8 more test that are safe for --strip-debug. - Add --strip-debug to 5 more tests. - Cleanup in-between tests of JLinkTest and use --strip-debug where applicable. - Cleanup image-dirs in-between test-methods in UserModuleTest and in the end. - Add in-between cleanup to LegalFilePluginTest and ExcludeJmodSectionPluginTest - Use --strip-debug where it is feasible - Further test improvements. - ... and 1 more: https://git.openjdk.org/jdk/compare/2e179fec...ee24c18a Changes: https://git.openjdk.org/jdk/pull/32009/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=32009&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8375623 Stats: 266 lines in 28 files changed: 165 ins; 46 del; 55 mod Patch: https://git.openjdk.org/jdk/pull/32009.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/32009/head:pull/32009 PR: https://git.openjdk.org/jdk/pull/32009
