title: DataFlowTemplate response does not return body
body: <p>Considering the test07 stream is already created the following code snippet won't get response body in the exception stack trace.</p>
  <pre><code>    try {
          URI dataFlowUri = URI.create(&quot;http://localhost:9393&quot;);
          DataFlowOperations dataFlowOperations = new DataFlowTemplate(dataFlowUri);
          StreamDefinition streamDefinition = Stream.builder(dataFlowOperations)
                  .name(&quot;test07&quot;)
                  .definition(&quot;time|log&quot;)
                  .create();
  
      }
      catch (Exception ex){
          ex.printStackTrace();
      }
  </code></pre>
  <blockquote>
  <p>org.springframework.web.client.HttpClientErrorException$Conflict: 409 : [no body]
  at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:125)
  at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:184)
  at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:125)
  at org.springframework.cloud.dataflow.rest.client.VndErrorResponseErrorHandler.handleError(VndErrorResponseErrorHandler.java:62)
  at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
  at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:782)
  at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:740)
  at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:674)
  at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:418)
  at org.springframework.cloud.dataflow.rest.client.StreamTemplate.createStream(StreamTemplate.java:121)
  at org.springframework.cloud.dataflow.rest.client.dsl.StreamDefinition.(StreamDefinition.java:60)
  at org.springframework.cloud.dataflow.rest.client.dsl.Stream$StreamDefinitionBuilder.create(Stream.java:400)</p>
  </blockquote>
  <p>on other hand when Post request this directly</p>
  <p>http://localhost:9393/streams/definitions?name=test07&amp;definition=time%20%7C%20log&amp;description=test07</p>
  <p>the response as follow with status code 409</p>
  <blockquote>
  <p>[
  {
  &quot;logref&quot;: &quot;DuplicateStreamDefinitionException&quot;,
  &quot;message&quot;: &quot;Cannot create stream test07 because another one has already been created with the same name&quot;
  }
  ]</p>
  </blockquote>
  <p>I want to get response body when exception occur<br />
  so anyone can help if I'm missing something here?</p>