[jdk17u-dev] RFR: 8285951: Replace Algorithms.eatMemory(...) with WB.fullGC() in vmTestbase_vm_gc_ref tests

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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Commit messages:
 - Backport 61cb4b7448e96cb1ae218af4c39f44a5c66c0f9f

Changes: https://git.openjdk.org/jdk17u-dev/pull/3623/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3623&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8285951
  Stats: 924 lines in 28 files changed: 117 ins; 557 del; 250 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3623.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3623/head:pull/3623

PR: https://git.openjdk.org/jdk17u-dev/pull/3623