Enable pydocstyle for all packages.

[bdice]

Follow-up to #10748 to enable the base pydocstyle rules on all Python packages (dask_cudf, cudf_kafka, custreamz) and test files. Contributes to #10711, #10758.

[bdice]

@gpucibot merge

[codecov]

Codecov Report

Merging #10759 (8ab68d5) into branch-22.06 (84f88ce) will increase coverage by 0.02%.
The diff coverage is n/a.

@@               Coverage Diff                @@
##           branch-22.06   #10759      +/-   ##
================================================
+ Coverage         86.40%   86.43%   +0.02%     
================================================
  Files               143      143              
  Lines             22444    22444              
================================================
+ Hits              19393    19399       +6     
+ Misses             3051     3045       -6     

Impacted Files	Coverage Δ
python/cudf/cudf/comm/gpuarrow.py	79.76% <ø> (ø)
python/cudf/cudf/core/column/string.py	89.21% <ø> (+0.12%)	⬆️
python/cudf/cudf/core/frame.py	93.41% <ø> (ø)
python/cudf/cudf/core/series.py	95.16% <ø> (ø)
python/custreamz/custreamz/kafka.py	29.16% <ø> (ø)
python/cudf/cudf/core/dataframe.py	93.74% <0.00%> (+0.04%)	⬆️
python/cudf/cudf/core/groupby/groupby.py	91.79% <0.00%> (+0.22%)	⬆️
python/cudf/cudf/core/tools/datetimes.py	84.49% <0.00%> (+0.30%)	⬆️
python/cudf/cudf/core/column/lists.py	92.91% <0.00%> (+0.83%)	⬆️

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