Set default Node.js version to 6.9.1
Set default Node.js version to 6.9.1

JonasHavers/openshift-cartridge-nodejs,joseph-turner/openshift-cartridge-nodejs,icflorescu/openshift-cartridge-nodejs,JonasHavers/openshift-cartridge-nodejs,joseph-turner/openshift-cartridge-nodejs,icflorescu/openshift-cartridge-nodejs,JonasHavers/openshift-cartridge-nodejs,joseph-turner/openshift-cartridge-nodejs,icflorescu/openshift-cartridge-nodejs