Added parametrization for callback url
Added parametrization for callback url

Fiware/ops.Sla-dashboard,Atos-FiwareOps/sla-dashboard,Atos-FiwareOps/sla-dashboard,Fiware/ops.Sla-dashboard,Fiware/ops.Sla-dashboard,Atos-FiwareOps/sla-dashboard,Atos-FiwareOps/sla-dashboard,Fiware/ops.Sla-dashboard