perf: only enqueue subnet when necessary

Signed-off-by: Mengxin Liu <liumengxinfly@gmail.com>

Author: oilbeater

pkg/controller/vpc.go

@@ -594,7 +594,11 @@ func (c *Controller) handleAddOrUpdateVpc(key string) error {
 	custVpcEnableExternalEcmp := false
 	for _, subnet := range subnets {
 		if subnet.Spec.Vpc == key {
-			c.addOrUpdateSubnetQueue.Add(subnet.Name)
+			// Accelerate subnet update when vpc config is updated.
+			// In case VPC not set namespaces, subnet will backoff and may take long time to back to ready.
+			if subnet.Status.IsNotReady() || subnet.Spec.U2OInterconnection {
+				c.addOrUpdateSubnetQueue.Add(subnet.Name)
+			}
 			if vpc.Name != util.DefaultVpc && vpc.Spec.EnableBfd && subnet.Spec.EnableEcmp {
 				custVpcEnableExternalEcmp = true
 			}