Fix bug of converting system properties from EventData to Spring message in Eventhub binder (Azure#22683)

* fix bug of converting system properties

* add changelog

Author: yiliuTo

sdk/spring/azure-spring-cloud-autoconfigure/CHANGELOG.md

@@ -1,6 +1,8 @@
 # Release History
 
 ## 2.7.0-beta.1 (Unreleased)
+### Key Bug Fixes
+- Fixed `EventHubMessageConverter` to load all system properties of `EventData` and put in the header of org.springframework.messaging.Message.([#22683](https://github.com/Azure/azure-sdk-for-java/pull/22683/))
 
 
 ## 2.6.0 (2021-06-23)

sdk/spring/azure-spring-cloud-starter-eventhubs/CHANGELOG.md

@@ -1,6 +1,8 @@
 # Release History
 
 ## 2.7.0-beta.1 (Unreleased)
+### Key Bug Fixes
+- Fixed `EventHubMessageConverter` to load all system properties of `EventData` and put in the header of org.springframework.messaging.Message.([#22683](https://github.com/Azure/azure-sdk-for-java/pull/22683/))
 
 
 ## 2.6.0 (2021-06-23)

sdk/spring/azure-spring-cloud-stream-binder-eventhubs/CHANGELOG.md

@@ -1,6 +1,8 @@
 # Release History
 
 ## 2.7.0-beta.1 (Unreleased)
+### Key Bug Fixes
+- Fixed `EventHubMessageConverter` to load all system properties of `EventData` and put in the header of org.springframework.messaging.Message.([#22683](https://github.com/Azure/azure-sdk-for-java/pull/22683/))
 
 
 ## 2.6.0 (2021-06-23)

sdk/spring/azure-spring-cloud-test-eventhubs/src/test/java/com/azure/spring/test/eventhubs/stream/binder/EventHubBinderSyncModeIT.java

@@ -66,7 +66,7 @@ public Supplier<Flux<Message<String>>> supply(Sinks.Many<Message<String>> many)
         public Consumer<Message<String>> consume() {
             return message -> {
                 LOGGER.info("EventHubBinderRecordModeIT: New message received: '{}'", message.getPayload());
-                if (message.getPayload().equals(EventHubBinderSyncModeIT.message)) {
+                if (message.getPayload().equals(EventHubBinderSyncModeIT.message) && message.getHeaders().containsKey("x-opt-enqueued-time")) {
                     latch.countDown();
                 }
             };

sdk/spring/azure-spring-integration-eventhubs/CHANGELOG.md

@@ -1,7 +1,8 @@
 # Release History
 
 ## 2.7.0-beta.1 (Unreleased)
-
+### Key Bug Fixes
+- Fixed `EventHubMessageConverter` to load all system properties of `EventData` and put in the header of org.springframework.messaging.Message.([#22683](https://github.com/Azure/azure-sdk-for-java/pull/22683/))
 
 ## 2.6.0 (2021-06-23)
 ### New Features

sdk/spring/azure-spring-integration-eventhubs/src/main/java/com/azure/spring/integration/eventhub/converter/EventHubMessageConverter.java

@@ -86,6 +86,7 @@ protected Map<String, Object> buildCustomHeaders(EventData azureMessage) {
 
     private Map<String, Object> getSystemProperties(EventData azureMessage) {
         Map<String, Object> result = new HashMap<>();
+        result.putAll(azureMessage.getSystemProperties());
         result.put(EventHubHeaders.ENQUEUED_TIME, azureMessage.getEnqueuedTime());
         result.put(EventHubHeaders.OFFSET, azureMessage.getOffset());
         result.put(EventHubHeaders.SEQUENCE_NUMBER, azureMessage.getSequenceNumber());