[lworld] RFR: 8293812: rename regression tests folder from lworld-values to primitive-classes

[Vicente Romero]

just a test folder rename to match current terminology better

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Commit messages:
 - 8293812: rename regression tests folder from lworld-values to primitive-classes

Changes: https://git.openjdk.org/valhalla/pull/756/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=756&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293812
  Stats: 0 lines in 216 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/756.diff
  Fetch: git fetch https://git.openjdk.org/valhalla pull/756/head:pull/756

PR: https://git.openjdk.org/valhalla/pull/756