return trace id for debugging
return trace id for debugging

varnish/varnish-microservice-monitor,varnish/varnish-microservice-monitor,varnish/zipnish,varnish/zipnish,varnish/varnish-microservice-monitor,varnish/zipnish,varnish/varnish-microservice-monitor,varnish/zipnish,varnish/varnish-microservice-monitor,varnish/zipnish