Ensure metadata in BEL graph test data
Ensure metadata in BEL graph test data

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