RFR: 8283903: GetContainerCpuLoad does not return the correct result in share mode [v3]

[xpbob]

On Wed, 30 Mar 2022 09:17:03 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> xpbob has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Change the expression
>
> Hi,
> Could the bug description be updated to state what the problem is, and under what circumstances is there a problem?

@kevinjwalls @jerboaa 
Thanks to review.
I updated bug descriptions, runtime data,  and reproduction methods

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PR: https://git.openjdk.java.net/jdk/pull/8028