[jdk11u-dev] RFR: 8313083: Print 'rss' and 'cache' as part of the container information [v2]

[Jonathan Dowland]

> I backport this for parity with 11.0.29-oracle.

Jonathan Dowland has updated the pull request incrementally with one additional commit since the last revision:

  Avoid use of C++ 11 nullptr for JDK11u-dev
  
  Signed-off-by: Jonathan Dowland <jdowland at redhat.com>

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Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/3120/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/3120/files/c14b081c..704272dd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3120&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3120&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3120.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3120/head:pull/3120

PR: https://git.openjdk.org/jdk11u-dev/pull/3120