Rename deadletter queue and add ttl

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-autoconfigure/src/main/resources/hawkbitdefaults.properties

@@ -42,6 +42,6 @@ hawkbit.controller.minPollingTime=00:00:30
 
 
 # Configuration for RabbitMQ integration
-hawkbit.dmf.rabbitmq.deadLetterQueue=dmf_connector_deadletter
+hawkbit.dmf.rabbitmq.deadLetterQueue=dmf_connector_deadletter_ttl
 hawkbit.dmf.rabbitmq.deadLetterExchange=dmf.connector.deadletter
 hawkbit.dmf.rabbitmq.receiverQueue=dmf_receiver

hawkbit-dmf-amqp/src/main/java/org/eclipse/hawkbit/amqp/AmqpConfiguration.java

@@ -41,6 +41,12 @@ public class AmqpConfiguration {
     @Autowired
     private ConnectionFactory connectionFactory;
 
+    /**
+     * Create a {@link RabbitAdmin} and ignore declaration exceptions.
+     * {@link RabbitAdmin#setIgnoreDeclarationExceptions(boolean)}
+     * 
+     * @return the bean
+     */
     @Bean
     public RabbitAdmin rabbitAdmin() {
         final RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory);

hawkbit-dmf-amqp/src/main/java/org/eclipse/hawkbit/amqp/AmqpProperties.java

@@ -21,7 +21,7 @@ public class AmqpProperties {
     /**
      * DMF API dead letter queue.
      */
-    private String deadLetterQueue = "dmf_connector_deadletter";
+    private String deadLetterQueue = "dmf_connector_deadletter_ttl";
 
     /**
      * DMF API dead letter exchange.