[8u] RFR: 8226575: OperatingSystemMXBean should be made container aware

[Severin Gehwolf]

On Thu, 2020-08-20 at 21:44 +0100, Andrew Hughes wrote:
> Forgot to mention the HotSpot tests look ok other than:
> 
> +            if (!DockerTestUtils.RETAIN_IMAGE_AFTER_TEST) {
> +                DockerTestUtils.removeDockerImage(imageName);
> +            }
> 
> seems to be missing in a couple of the files. Why?

RETAIN_IMAGE_AFTER_TEST was introduced with JDK-8221710 which isn't in
OpenJDK 8u (yet). It's in my queue of docker test fixes. I can re-add
those missing hunks with the JDK-8221710 backport.

Thanks,
Severin