Allow for customizing the name of the target NATS Streaming cluster.

Signed-off-by: Bruno Miguel Custódio <brunomcustodio@gmail.com>

gateway/vendor/github.com/openfaas/nats-queue-worker/handler/handler.go

@@ -7,17 +7,16 @@ import (
 )
 
 // CreateNATSQueue ready for asynchronous processing
-func CreateNATSQueue(address string, port int, clientConfig NATSConfig) (*NATSQueue, error) {
+func CreateNATSQueue(address string, port int, clusterName string, clientConfig NATSConfig) (*NATSQueue, error) {
 	var err error
 	natsURL := fmt.Sprintf("nats://%s:%d", address, port)
 	log.Printf("Opening connection to %s\n", natsURL)
 
 	clientID := clientConfig.GetClientID()
-	clusterID := "faas-cluster"
 
 	queue1 := NATSQueue{
 		ClientID:       clientID,
-		ClusterID:      clusterID,
+		ClusterID:      clusterName,
 		NATSURL:        natsURL,
 		Topic:          "faas-request",
 		maxReconnect:   clientConfig.GetMaxReconnect(),