[jdk11u-dev] RFR: 8284950: CgroupV1 detection code should consider memory.swappiness

[xpbob]

Backport 46d208fb1ce9a3d45bee2afda824f15c84a5e4d2

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Commit messages:
 - Backport 46d208fb1ce9a3d45bee2afda824f15c84a5e4d2

Changes: https://git.openjdk.org/jdk11u-dev/pull/1336/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1336&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284950
  Stats: 142 lines in 4 files changed: 137 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1336.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1336/head:pull/1336

PR: https://git.openjdk.org/jdk11u-dev/pull/1336