Managed Streaming for Kafka Connect Update: Minor model changes for Kafka Connect as well as endpoint updates.

Author: AWS

.changes/next-release/feature-ManagedStreamingforKafkaConnect-579d6ef.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Managed Streaming for Kafka Connect",
+    "contributor": "",
+    "description": "Minor model changes for Kafka Connect as well as endpoint updates."
+}