[crac] RFR: Adjusting CRaC tests

[Roman Marchenko]

On Wed, 22 Nov 2023 08:44:23 GMT, Roman Marchenko <rmarchenko at openjdk.org> wrote:

> Fixing the CRaC tests to adapt them for different platforms
> 
> - Extended test timeouts to accomodate slower docker image builds.
> - NativePRNGBlocking is exluded as on some machines /dev/random is exhausted too soon
> - Adjusting timeout to prevent test failing on centOS 7

@AntonKozlov @rvansa 
Could you review please?

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PR Comment: https://git.openjdk.org/crac/pull/144#issuecomment-1860625520