Bump to nats-queue-worker 0.7.0

Includes fix for reconnection bug to NATS Streaming

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

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

@@ -11,6 +11,10 @@ import (
 type ReadConfig struct {
 }
 
+const DefaultMaxReconnect = 120
+
+const DefaultReconnectDelay = time.Second * 2
+
 func (ReadConfig) Read() QueueWorkerConfig {
 	cfg := QueueWorkerConfig{
 		AckWait:     time.Second * 30,
@@ -58,6 +62,31 @@ func (ReadConfig) Read() QueueWorkerConfig {
 		}
 	}
 
+	cfg.MaxReconnect = DefaultMaxReconnect
+
+	if value, exists := os.LookupEnv("faas_max_reconnect"); exists {
+		val, err := strconv.Atoi(value)
+
+		if err != nil {
+			log.Println("converting faas_max_reconnect to int error:", err)
+		} else {
+			cfg.MaxReconnect = val
+		}
+	}
+
+	cfg.ReconnectDelay = DefaultReconnectDelay
+
+	if value, exists := os.LookupEnv("faas_reconnect_delay"); exists {
+		reconnectDelayVal, durationErr := time.ParseDuration(value)
+
+		if durationErr != nil {
+			log.Println("parse env var: faas_reconnect_delay as time.Duration error:", durationErr)
+
+		} else {
+			cfg.ReconnectDelay = reconnectDelayVal
+		}
+	}
+
 	if val, exists := os.LookupEnv("ack_wait"); exists {
 		ackWaitVal, durationErr := time.ParseDuration(val)
 		if durationErr != nil {
@@ -78,4 +107,6 @@ type QueueWorkerConfig struct {
 	WriteDebug     bool
 	MaxInflight    int
 	AckWait        time.Duration
+	MaxReconnect   int
+	ReconnectDelay time.Duration
 }