title: How to add a custom header and then retrieve a custom header in rabbit message header
body: <p>I need to find a way to add an origin value in the custom header and then retrieve a custom header in the rabbit message header. Ideally, we should have it this way.</p>
  
  <p>So far, I didn't have any success trying to find a way to do this.</p>
  
  <pre><code>Exchange    Test.Exchange
  Routing Key Test.Exchange.7752275b-2323-42bf-98a4
  Redelivered ●
  Properties  user_id:fc4c-4d9c-9e4e-ad881040d0c1
  type:   Events.Exchange
  message_id: b2aff0d2-c8f4-4627-9826-089799bab344
  delivery_mode:  2
  headers:    global_execution_id:    7752275b-2323-42bf-98a4-ba7a8b96f2de
  sent:   2019-04-30T13:54:24.4098945Z
  **origin:   Test_Origin**
  
  content_encoding:   UTF-8
  content_type:   application/json
  
  Payload30 bytesEncoding: string {"$id":"2","tenantId":"3456"}
  </code></pre>