Include tests in sdist (#3667)
Include tests in sdist (#3667)

* Add test Python files to MANIFEST.in

* Add other test resources and tweaks

Co-authored-by: Matthew Treinish <4efabb057cc143e1042444743947010c1661479a@kortar.org>
Co-authored-by: mergify[bot] <b09a6ee808b67e98a221404e7aaa52e0398a4954@users.noreply.github.com>

QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py