[lworld] Integrated: 8338261: [lworld] FieldLayoutAnalyzer::checkSubClasses fails with NullPointerException: Cannot read field

[Frederic Parain]

Disable use of CDS in field layout tests in order to get a complete log of class layouts.

Tested with Mach5, tier 1.

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Commit messages:
 - Disable CDS to get a complete layout log

Changes: https://git.openjdk.org/valhalla/pull/1214/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1214&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338261
  Stats: 3 lines in 3 files changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1214.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1214/head:pull/1214

PR: https://git.openjdk.org/valhalla/pull/1214