[jdk21u-dev] RFR: 8352926: New test TestDockerMemoryMetricsSubgroup.java fails [v3]

[Sergey Chernyshev]

> These are clean backports of JDK-8352926 and it's follow up fix JDK-8360533.
> 
> JDK-8352926 and JDK-8360533 are follow up fixes for JDK-8343191 (#2278)
> 
> This PR depends on and can be integrated after #2279

Sergey Chernyshev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:

 - Merge branch 'master' into Backport-9ca1004e76a614328cd2eb7546143839c4d2f810
 - Backport 97ec9d3e0a6e3455579b567e1f58026f5b168c09
 - Backport 9ca1004e76a614328cd2eb7546143839c4d2f810
 - Backport 46b3d1d8cfd03e01d993be19d725cdbcafef7865
 - Backport de29ef3bf3a029f99f340de9f093cd20544217fd

-------------

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/2280/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/2280/files/0bac8c85..c54224fc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2280&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2280&range=01-02

  Stats: 5444 lines in 80 files changed: 3116 ins; 837 del; 1491 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2280.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2280/head:pull/2280

PR: https://git.openjdk.org/jdk21u-dev/pull/2280