Add __init__.py file to tests so python 2 can import from them.
Add __init__.py file to tests so python 2 can import from them.

pvtodorov/indra,johnbachman/belpy,johnbachman/indra,johnbachman/belpy,bgyori/indra,bgyori/indra,sorgerlab/belpy,sorgerlab/belpy,sorgerlab/indra,pvtodorov/indra,johnbachman/indra,johnbachman/belpy,pvtodorov/indra,sorgerlab/indra,johnbachman/indra,sorgerlab/belpy,sorgerlab/indra,bgyori/indra,pvtodorov/indra