[jdk11u-dev] RFR: 8253727: [cgroups v2] Memory and swap limits reported incorrectly

[Severin Gehwolf]

Backport JDK-8253727 to 11u-dev. Depends on #863.

Testing: container tests on a cgroups v2 system

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/863

Commit messages:
 - 8253727: [cgroups v2] Memory and swap limits reported incorrectly

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/894/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=894&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253727
  Stats: 47 lines in 3 files changed: 42 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/894.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/894/head:pull/894

PR: https://git.openjdk.java.net/jdk11u-dev/pull/894