[jdk25u] RFR: 8359174: tools/jlink/JLink20000Packages.java timed out

[Voznia Anton]

Hi,

It a clean backport of [JDK-8359174](https://bugs.openjdk.org/browse/JDK-8359174).
Now, the test `JLink20000Packages.java` is passing without the timeout error.

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Commit messages:
 - 8359174: tools/jlink/JLink20000Packages.java timed out

Changes: https://git.openjdk.org/jdk25u/pull/267/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=267&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8359174
  Stats: 124 lines in 2 files changed: 56 ins; 45 del; 23 mod
  Patch: https://git.openjdk.org/jdk25u/pull/267.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/267/head:pull/267

PR: https://git.openjdk.org/jdk25u/pull/267