Fix bootstrap servers on prod

module-server/src/main/resources/application-prod.yaml

@@ -3,3 +3,6 @@ spring:
     import:
       - "classpath:config/wahlrecht.yaml"
       - "optional:configserver:http://configserver:8888/config"
+  kafka:
+    bootstrap-servers:
+      - kafka:9092

module-server/src/main/resources/application.yaml

@@ -28,10 +28,6 @@ spring:
       name: wahlrecht
   main:
     banner-mode: off
-  kafka:
-    bootstrap-servers:
-      - localhost:9092
-      - kafka:9092
   profiles:
     default: dev
   data.mongodb: