[REVIEW] Fix seeding of KISS99 RNG

[vinaydes]

Initializing KISS99 RNG with 64-bit seed and changing internal hashing from 32-bit to 128-bit. This maximizes the entropy. I observed no performance degradation due to this update.

[GPUtester]

Can one of the admins verify this patch?

[GPUtester]

Can one of the admins verify this patch?

[GPUtester]

Please update the changelog in order to start CI tests.

View the gpuCI docs here.

[teju85]

LGTM.

[codecov-io]

Codecov Report

Merging #2983 into branch-0.17 will increase coverage by 0.45%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           branch-0.17    #2983      +/-   ##
===============================================
+ Coverage        58.40%   58.85%   +0.45%     
===============================================
  Files              143      143              
  Lines             8897     8997     +100     
===============================================
+ Hits              5196     5295      +99     
- Misses            3701     3702       +1     

Impacted Files	Coverage Δ
python/cuml/pytest_benchmarks/test_bench.py	100.00% <0.00%> (ø)
python/cuml/common/array.py	97.72% <0.00%> (+0.01%)	⬆️
python/cuml/metrics/_ranking.py	98.61% <0.00%> (+0.03%)	⬆️
python/cuml/preprocessing/encoders.py	95.18% <0.00%> (+0.07%)	⬆️
...on/cuml/_thirdparty/sklearn/preprocessing/_data.py	63.45% <0.00%> (+0.12%)	⬆️
python/cuml/naive_bayes/naive_bayes.py	92.69% <0.00%> (+0.16%)	⬆️
...ing/text/stem/porter_stemmer_utils/suffix_utils.py	90.47% <0.00%> (+0.23%)	⬆️
...ython/cuml/_thirdparty/sklearn/utils/validation.py	22.71% <0.00%> (+0.26%)	⬆️
python/cuml/feature_extraction/_tfidf.py	94.79% <0.00%> (+0.28%)	⬆️
python/cuml/_version.py	45.51% <0.00%> (+0.39%)	⬆️
... and 28 more

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