[lworld] Integrated: Adjust testing for ZGenerational compiler failures

[David Simms]

* compiler/gcbarriers/TestZGCBarrierElision.java 8313737 generic-all
* compiler/valhalla/inlinetypes/TestArrays.java 8313667 generic-all

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Commit messages:
 - Adjust testing for ZGenerational compiler failures

Changes: https://git.openjdk.org/valhalla/pull/897/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=897&range=00
  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/897.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/897/head:pull/897

PR: https://git.openjdk.org/valhalla/pull/897