[lworld] RFR: 8364321: Add JDI tests for value objects

[Alex Menkov]

The fix adds sanity tests for JDI classes with value objects

-------------

Commit messages:
 - jdi sanity tests

Changes: https://git.openjdk.org/valhalla/pull/1519/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1519&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8364321
  Stats: 479 lines in 3 files changed: 479 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1519.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1519/head:pull/1519

PR: https://git.openjdk.org/valhalla/pull/1519