Build setup.py and requirements files using moban

This uses https://github.com/moremoban/pypi-mobans/blob/master/templates/setup.py.jj2 instead of https://gitlab.com/coala/mobans/blob/master/templates/coala-setup.py.jj2

Compare with coala-utils!57 (merged) , which does use https://gitlab.com/coala/mobans/blob/master/templates/coala-setup.py.jj2

This is part of seeing how we would go about migrating to a template used by other projects c.f. mobans#15