Support multiple test name matching patterns in cumulusci.test.namematch by splitting on ,
Support multiple test name matching patterns in cumulusci.test.namematch
by splitting on ,

e02d96ec16/CumulusCI,SalesforceFoundation/CumulusCI,steelbrick/CumulusCI,roundcorner-products/CumulusCI,e02d96ec16/CumulusCI,Joble/CumulusCI,steelbrick/CumulusCI,SalesforceFoundation/CumulusCI,ddrezga/CumulusCI,motivislearning/CumulusCI,motivislearning/CumulusCI,cdcarter/CumulusCI,ddrezga/CumulusCI,roundcorner-products/CumulusCI