[jdk8u-dev] RFR: 8313083: Print 'rss' and 'cache' as part of the container information [v3]

[Jonathan Dowland]

> Low risk, Oracle parity. Improves diagnostic output. Includes test modifications to cover the new diagnostics.
> 
> Included test `hotspot/test/runtime/containers/docker/TestMisc.java` passes for me.

Jonathan Dowland 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 six additional commits since the last revision:

 - Merge remote-tracking branch 'jdk8u-dev/master' into 8313083-8u
 - remove reporting on tasks
   
   included in error; part of context of backport but not added by
   the backport.
   
   Signed-off-by: Jonathan Dowland <jdowland at redhat.com>
 - 8313083: Print 'rss' and 'cache' as part of the container information
   
   Reviewed-by: andrew, sgehwolf
   Backport-of: aeb2d2d0ce17da3aa7d49679beb4da2dd6f341ad
 - 8287011: Improve container information
   
   Backport-of: e60939850e5328b9c0f2002ac5ed7744375bf18b
 - 8284758: [linux] improve print_container_info
   
   Reviewed-by: sgehwolf
   Backport-of: 6c6d5223dfaae268f968f4292356d4be89adb122
 - 8220658: Improve the readability of container information in the error log
   
   Backport-of: 2c4b9e0778e170a17b04217bee66bb6c4fb18c0c

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

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/726/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/726/files/0be5b9f2..292d2f79

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=726&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=726&range=01-02

  Stats: 72014 lines in 467 files changed: 24574 ins; 15476 del; 31964 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/726.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/726/head:pull/726

PR: https://git.openjdk.org/jdk8u-dev/pull/726