title: How to set routing when index document by ElasticsearchTemplate?
body: <p>I am using ElasticsearchTemplate to index document into Elasticsearch. Now I have to set custome routing, however, I don't find how to set route in ElasticsearchTemplate.</p>
  
  <p>I am using spring-data-elasticsearch-3.2.0.M4 to support RestClient.</p>
  
  <pre><code>             List&lt;IndexQuery&gt; queries = new ArrayList&lt;IndexQuery&gt;();
               IndexQuery e = new IndexQuery();
               e.setIndexName(map.get("index"));
               e.setSource(map.get("source"));
               if(map.get("id")!=null) {
                   e.setId(map.get("id"));     
               }
               queries.add(e );
               if(queries.size()&gt;1000) {
                   esTemplate.bulkIndex(queries);
                }
  </code></pre>
  
  <p>I can find index,type,id,version,source etc in IndexQuery although I didn't find  route field in IndexQuery. Does it not support route Or what am I missing ?</p>