michaelg/dev: links for esmvaltool-sample-data

root/pypi esmvaltool_sample_data-0.0.4.tar.gz
root/pypi esmvaltool_sample_data-0.0.4-py3-none-any.whl
root/pypi ESMValTool_sample_data-0.0.3.tar.gz
root/pypi ESMValTool_sample_data-0.0.3-py3-none-any.whl