Ensure router is present when Kuryr is used

Kuryr requires a router to be present on the cluster
to allow communication between VMs, Pod and Services.
However, during a FIP less no router is created by
the installer. This commit makes sure a router is
created if not already present.

pkg/platform/openstack/kuryr_bootstrap.go

@@ -343,6 +343,12 @@ func BootstrapKuryr(conf *operv1.NetworkSpec, kubeClient client.Client) (*bootst
 		return nil, errors.Wrap(err, "failed list ports of worker nodes router")
 	}
 
+	log.Printf("Adding worker nodes %s subnet to the router", workerSubnet.ID)
+	err = ensureOpenStackRouterInterface(client, routerId, workerSubnet.ID, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to create worker nodes subnet router interface")
+	}
+
 	if !lookupOpenStackPort(ps, svcSubnetId) {
 		log.Printf("Ensuring service subnet router port with %s IP", gatewayIP.String())
 		portId, err := ensureOpenStackPort(client, generateName("kuryr-service-subnet-router-port", clusterID), tag,

pkg/platform/openstack/networking.go

@@ -183,7 +183,15 @@ func findOpenStackRouter(client *gophercloud.ServiceClient, name, tag string) (r
 	if len(routerList) == 1 {
 		return routerList[0], nil
 	} else if len(routerList) == 0 {
-		return empty, errors.New("router not found")
+		router, err := routers.Create(client, routers.CreateOpts{Name: name}).Extract()
+		if err != nil {
+			return empty, errors.Wrap(err, "failed to create router")
+		}
+		_, err = tagResource(client, "routers", router.ID, tag)
+		if err != nil {
+			return empty, errors.Wrap(err, "failed to tag created router")
+		}
+		return *router, nil
 	} else {
 		return empty, errors.New("multiple matching routers")
 	}