add srl connectivity test (#3056)

* add srl connectivity test

* Update test/e2e/kube-ovn/switch_lb_rule/switch_lb_rule.go

---------

Co-authored-by: 张祖建 <zhangzujian.7@gmail.com>

pkg/controller/endpoint.go

@@ -194,16 +194,18 @@ func (c *Controller) handleUpdateEndpoint(key string) error {
 
 			// for performance reason delete lb with no backends
 			if len(backends) != 0 {
+				klog.V(3).Infof("update vip %s with backends %s to LB %s", vip, backends, lb)
 				if err = c.ovnClient.LoadBalancerAddVip(lb, vip, backends...); err != nil {
 					klog.Errorf("failed to add vip %s with backends %s to LB %s: %v", vip, backends, lb, err)
 					return err
 				}
 			} else {
+				klog.V(3).Infof("delete vip %s from LB %s", vip, lb)
 				if err := c.ovnClient.LoadBalancerDeleteVip(lb, vip); err != nil {
 					klog.Errorf("failed to delete vip %s from LB %s: %v", vip, lb, err)
 					return err
 				}
-
+				klog.V(3).Infof("delete vip %s from old LB %s", vip, lb)
 				if err := c.ovnClient.LoadBalancerDeleteVip(oldLb, vip); err != nil {
 					klog.Errorf("failed to delete vip %s from LB %s: %v", vip, lb, err)
 					return err

pkg/controller/service.go

@@ -56,7 +56,6 @@ func (c *Controller) enqueueAddService(obj interface{}) {
 
 func (c *Controller) enqueueDeleteService(obj interface{}) {
 	svc := obj.(*v1.Service)
-	//klog.V(3).Infof("enqueue delete service %s/%s", svc.Namespace, svc.Name)
 	klog.Infof("enqueue delete service %s/%s", svc.Namespace, svc.Name)
 
 	vip, ok := svc.Annotations[util.SwitchLBRuleVipsAnnotation]

pkg/ipam/ipam.go

@@ -61,7 +61,7 @@ func (ipam *IPAM) GetRandomAddress(podName, nicName string, mac *string, subnetN
 func (ipam *IPAM) GetStaticAddress(podName, nicName, ip string, mac *string, subnetName string, checkConflict bool) (string, string, string, error) {
 	ipam.mutex.RLock()
 	defer ipam.mutex.RUnlock()
-
+	klog.Infof("allocating static ip %s from subnet %s", ip, subnetName)
 	if subnet, ok := ipam.Subnets[subnetName]; !ok {
 		return "", "", "", ErrNoAvailable
 	} else {