[jdk17u-dev] RFR: 8273881: Metaspace: test repeated deallocations

[Goetz Lindenmaier]

I backport this for parity with 17.0.5-oracle.

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Commit messages:
 - Backport 83c37719290039672cf261701028c8eb044a2e77

Changes: https://git.openjdk.org/jdk17u-dev/pull/689/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=689&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8273881
  Stats: 47 lines in 1 file changed: 47 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/689.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/689/head:pull/689

PR: https://git.openjdk.org/jdk17u-dev/pull/689