RFR: 8269851: OperatingSystemMXBean getProcessCpuLoad reports incorrect process cpu usage in containers [v2]

[xpbob]

> …ocess cpu usage in containers

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

  remove empty line

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4702/files
  - new: https://git.openjdk.java.net/jdk/pull/4702/files/91aa779d..3693793e

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4702&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4702&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4702.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4702/head:pull/4702

PR: https://git.openjdk.java.net/jdk/pull/4702