RFR: 8279453: Disable tools/jar/ReproducibleJar.java on 32-bit platforms

Tue Jan 4 16:53:25 UTC 2022

The real problem is Y2038 ([JDK-8279444](https://bugs.openjdk.java.net/browse/JDK-8279444)), which does not look solvable at this time. So for test cleanliness, we might just disable this test on 32-bit platforms.

Additional testing:
 - [x] Linux x86_64 fastdebug, affected test still passes
 - [x]  Linux x86_32 fastdebug, affected test is now skipped

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Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jdk/pull/6957/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6957&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8279453
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6957.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6957/head:pull/6957

PR: https://git.openjdk.java.net/jdk/pull/6957