[REVIEW] Adding make_pipeline + test score with pipeline

[viclafargue]

This PR adds the make_pipeline utility function. Additionally, it tests the score function on Pipeline with different cuML estimators.

[JohnZed]

Thanks for adding!

[JohnZed]

rerun tests

[JohnZed]

rerun tests

[codecov-io]

Codecov Report

Merging #3632 (6ee545c) into branch-0.19 (14bd6c1) will decrease coverage by 0.28%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           branch-0.19    #3632      +/-   ##
===============================================
- Coverage        80.72%   80.44%   -0.29%     
===============================================
  Files              228      228              
  Lines            17629    17942     +313     
===============================================
+ Hits             14231    14433     +202     
- Misses            3398     3509     +111     

Flag	Coverage Δ
dask	45.01% <0.00%> (+0.05%)	⬆️
non-dask	73.40% <100.00%> (+0.46%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
python/cuml/pipeline/__init__.py	100.00% <100.00%> (ø)
python/cuml/linear_model/logistic_regression.pyx	59.69% <0.00%> (-29.27%)	⬇️
python/cuml/solvers/qn.pyx	70.96% <0.00%> (-26.67%)	⬇️
python/cuml/fil/fil.pyx	91.83% <0.00%> (ø)
python/cuml/dask/solvers/cd.py	100.00% <0.00%> (ø)
python/cuml/common/numba_utils.py	0.00% <0.00%> (ø)
python/cuml/neighbors/__init__.py	100.00% <0.00%> (ø)
python/cuml/internals/global_settings.py	100.00% <0.00%> (ø)
python/cuml/dask/preprocessing/encoders.py	100.00% <0.00%> (ø)
python/cuml/metrics/_ranking.py	98.57% <0.00%> (+0.02%)	⬆️
... and 41 more

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[dantegd]

@gpucibot merge