Update ansible tests to also run on CentOS7
Update ansible tests to also run on CentOS7

kotfic/girder,sutartmelson/girder,Xarthisius/girder,girder/girder,manthey/girder,kotfic/girder,sutartmelson/girder,data-exp-lab/girder,girder/girder,Kitware/girder,girder/girder,jbeezley/girder,Kitware/girder,adsorensen/girder,data-exp-lab/girder,RafaelPalomar/girder,Xarthisius/girder,adsorensen/girder,manthey/girder,jbeezley/girder,manthey/girder,jbeezley/girder,Kitware/girder,RafaelPalomar/girder,manthey/girder,RafaelPalomar/girder,Xarthisius/girder,Xarthisius/girder,RafaelPalomar/girder,sutartmelson/girder,Kitware/girder,data-exp-lab/girder,RafaelPalomar/girder,kotfic/girder,adsorensen/girder,adsorensen/girder,adsorensen/girder,jbeezley/girder,kotfic/girder,sutartmelson/girder,girder/girder,data-exp-lab/girder,data-exp-lab/girder,Xarthisius/girder,kotfic/girder,sutartmelson/girder