Refactor test_hierarchy_mgr to reflect new isa call
Refactor test_hierarchy_mgr to reflect new isa call

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