fix waitforpod goroutine leak due to infinite for loop

internal/kubernetes/agent.go

@@ -1221,11 +1221,12 @@ func (a *Agent) waitForPod(pod *v1.Pod) (error, bool) {
 		return err, false
 	}
 	defer w.Stop()
-	for {
+
+	expireTime := time.Now().Add(time.Second * 30)
+
+	for time.Now().Unix() <= expireTime.Unix() {
 		select {
-		case <-time.After(time.Second * 30):
-			return goerrors.New("timed out waiting for pod"), false
-		case <-time.Tick(time.Second):
+		case <-time.NewTicker(time.Second).C:
 			// poll every second in case we already missed the ready event while
 			// creating the listener.
 			pod, err = a.Clientset.CoreV1().
@@ -1251,6 +1252,8 @@ func (a *Agent) waitForPod(pod *v1.Pod) (error, bool) {
 			}
 		}
 	}
+
+	return goerrors.New("timed out waiting for pod"), false
 }
 
 func isPodReady(pod *v1.Pod) bool {