Send first e2e init message immediately

Otherwise right now we wait for 16 minutes until that happens.

e2e/service.go

@@ -168,15 +168,13 @@ func (s *Service) Start(ctx context.Context) error {
 	// Produce an init message until the consumer received at least one fetch
 	initTicker := time.NewTicker(1000 * time.Second)
 	isInitialized := false
+	// send first init message immediately
+	sendInitMessage(ctx, s.client, s.config.TopicManagement.Name)
 
 	for !isInitialized {
 		select {
 		case <-initTicker.C:
-			s.client.Produce(ctx, &kgo.Record{
-				Key:   []byte("init-message"),
-				Value: nil,
-				Topic: s.config.TopicManagement.Name,
-			}, nil)
+			sendInitMessage(ctx, s.client, s.config.TopicManagement.Name)
 		case <-initCh:
 			isInitialized = true
 			s.logger.Info("consumer has been successfully initialized")
@@ -196,6 +194,14 @@ func (s *Service) Start(ctx context.Context) error {
 	return nil
 }
 
+func sendInitMessage(ctx context.Context, client *kgo.Client, topicName string) {
+	client.Produce(ctx, &kgo.Record{
+		Key:   []byte("init-message"),
+		Value: nil,
+		Topic: topicName,
+	}, nil)
+}
+
 func (s *Service) startReconciliation(ctx context.Context) {
 	if !s.config.TopicManagement.Enabled {
 		return