Attempt to fix travis to skip manage_content in python 2.
Attempt to fix travis to skip manage_content in python 2.

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