[REVIEW] Add cleanup of python artifacts

[galipremsagar]

This PR removes __pycache__, .so & .pyc files.

[vyasr]

Looks fine to me. Might be a bit faster to use find -regex instead of piping all the output files to grep, but probably doesn't matter for this use case.

[codecov]

Codecov Report

Merging #10355 (5875534) into branch-22.04 (a7d88cd) will increase coverage by 0.19%.
The diff coverage is n/a.

@@               Coverage Diff                @@
##           branch-22.04   #10355      +/-   ##
================================================
+ Coverage         10.42%   10.62%   +0.19%     
================================================
  Files               119      122       +3     
  Lines             20603    20973     +370     
================================================
+ Hits               2148     2228      +80     
- Misses            18455    18745     +290     

Impacted Files	Coverage Δ
...ython/custreamz/custreamz/tests/test_dataframes.py	99.39% <0.00%> (-0.01%)	⬇️
python/cudf/cudf/errors.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/orc.py	0.00% <0.00%> (ø)
python/cudf/cudf/_version.py	0.00% <0.00%> (ø)
python/cudf/cudf/datasets.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/frame.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/index.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/parquet.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/series.py	0.00% <0.00%> (ø)
python/cudf/cudf/utils/utils.py	0.00% <0.00%> (ø)
... and 37 more

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[galipremsagar]

@gpucibot merge