UDN: Skip adding managementport to clusterPortGrp

We kept trying to add the management port
for secondary networks into the cluster
port group of secondary networks.

But that port group doesn't exist yet.
It will exist once we get ovn-org#4547
merged but until then this is causing
infinite retries from syncMgmtPort
erroring out.

Signed-off-by: Surya Seetharaman <suryaseetharaman.9@gmail.com>

go-controller/pkg/ovn/base_network_controller.go

@@ -680,11 +680,13 @@ func (bnc *BaseNetworkController) syncNodeManagementPort(node *kapi.Node, switch
 		return nil, err
 	}
 
-	// TODO(dceara): The cluster port group must be per network.
-	err = libovsdbops.AddPortsToPortGroup(bnc.nbClient, bnc.getClusterPortGroupName(types.ClusterPortGroupNameBase), logicalSwitchPort.UUID)
-	if err != nil {
-		klog.Errorf(err.Error())
-		return nil, err
+	// TODO(dceara): The cluster port group must be per network. So for now skip adding management port to the cluster port
+	// group for secondary network's because the cluster port group is not yet created for secondary networks.
+	if bnc.IsDefault() {
+		if err = libovsdbops.AddPortsToPortGroup(bnc.nbClient, bnc.getClusterPortGroupName(types.ClusterPortGroupNameBase), logicalSwitchPort.UUID); err != nil {
+			klog.Errorf(err.Error())
+			return nil, err
+		}
 	}
 
 	if v4Subnet != nil {