root/pypi: links for spf3

root/pypi spf3-2.0.17.tar.gz
root/pypi spf3-2.0.17-py3-none-any.whl
root/pypi spf3-2.0.16.tar.gz
root/pypi spf3-2.0.15.tar.gz
root/pypi spf3-2.0.15a0.tar.gz