[lworld] Integrated: 8334321: [lworld] add more javadoc and javax.lang.model tests for value classes

[Vicente Romero]

adding more tests for value classes javadoc and javax.lang.model

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Commit messages:
 - 8334321: [lworld] add more javadoc and javax.lang.model tests for value classes

Changes: https://git.openjdk.org/valhalla/pull/1134/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1134&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334321
  Stats: 41 lines in 2 files changed: 40 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1134.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1134/head:pull/1134

PR: https://git.openjdk.org/valhalla/pull/1134