Fix a log output from the haproxy controller.

pkg/haproxy/haproxy.go

@@ -222,7 +222,7 @@ func (hc *Controller) updateLoadStatus(inst *haproxyInst) error {
 func (hc *Controller) updateInstance(inst *haproxyInst, spec *Spec) error {
 	var err error
 
-	hc.log.Info("Update offloader instance %s to TLS config %s: %s",
+	hc.log.Infof("Update offloader instance %s to TLS config %s: %s",
 		inst.name, spec)
 	hc.log.Debugf("Offloader instance: %+v", inst)
 	if reflect.DeepEqual(spec, inst.spec) {