Get rid of duplicate code #143

Job	Run time
Test API, headers and no-engine mode	2m 12s
lint (mypy)	2m 27s
execution-filter	7s
lint (flake8)	22s
test-clean-install-ubuntu	2m 14s
test-clean-install-windows	3m 2s
Test BaseOnPython execution, Python 3.9	16m 4s
Test HDK storage format, Python 3.9	19m 4s
test-internals	4m 28s
test-ubuntu (engine unidist mpi, python 3.9)	2m 40s
test-ubuntu (engine python, python 3.9, group_1)	2m 55s
test experimental	8m 9s
test-ubuntu (engine ray, python 3.9, group_1)	2m 58s
test-ubuntu (engine ray, python 3.9, group_2)	3m 2s
test-asv-benchmarks	0s
test-ubuntu (engine ray, python 3.9, group_3)	3m 3s
test-${{ matrix.os }}-sanity (engine ${{ matrix.execution.name }}, python ${{ matrix.python-version }})	0s
test-ubuntu (engine ray, python 3.9, group_4)	3m 1s
test-ubuntu (engine dask, python 3.9, group_1)	2m 45s
test-spreadsheet (engine ray, python 3.9)	2m 26s
test-ubuntu (engine dask, python 3.9, group_2)	3m 2s
test-spreadsheet (engine dask, python 3.9)	2m 20s
test-ubuntu (engine dask, python 3.9, group_3)	2m 51s
test-ubuntu (engine dask, python 3.9, group_4)	2m 55s
test-windows (engine python, python 3.9, group_1)	15s
test-windows (engine ray, python 3.9, group_1)	1s
test-windows (engine ray, python 3.9, group_2)	1s
test-windows (engine ray, python 3.9, group_3)	1s
test-windows (engine ray, python 3.9, group_4)	1s
test-windows (engine dask, python 3.9, group_1)	47s
test-windows (engine dask, python 3.9, group_2)	15s
test-windows (engine dask, python 3.9, group_3)	39s
test-windows (engine dask, python 3.9, group_4)	21s
upload-coverage	20s
	1h 34m 48s

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