[jdk16u] RFR: 8261752: Multiple GC test are missing memory requirements

[Christoph Göttschkes]

8261752: Multiple GC test are missing memory requirements

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Commit messages:
 - Clean backport of JDK-8261752.

Changes: https://git.openjdk.java.net/jdk16u/pull/33/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=33&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261752
  Stats: 7 lines in 7 files changed: 2 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk16u/pull/33.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16u pull/33/head:pull/33

PR: https://git.openjdk.java.net/jdk16u/pull/33