[fix] fixed shield integration

- updated Shield version to 1.2.1 (final)
- Not all requests sent via the client proxy where set with the `__watcher_user`

Fixes elastic/elasticsearch#283

Original commit: elastic/x-pack-elasticsearch@3a36bd4d55

pom.xml

@@ -25,7 +25,7 @@
         <elasticsearch.version>1.5.0</elasticsearch.version>
         <lucene.maven.version>4.10.4</lucene.maven.version>
         <lucene.version>4.10.4</lucene.version>
-        <shield.version>1.2.1-SNAPSHOT</shield.version>
+        <shield.version>1.2.1</shield.version>
         <license.version>1.0.0</license.version>
 
         <tests.jvms>auto</tests.jvms>

src/main/java/org/elasticsearch/watcher/support/init/proxy/ClientProxy.java

@@ -63,17 +63,17 @@ public class ClientProxy implements InitializingService.Initializable {
 
     public BulkResponse bulk(BulkRequest request) {
         request.listenerThreaded(true);
-        return client.bulk(request).actionGet();
+        return client.bulk(preProcess(request)).actionGet();
     }
 
     public void index(IndexRequest request, ActionListener<IndexResponse> listener) {
         request.listenerThreaded(true);
-        client.index(request, listener);
+        client.index(preProcess(request), listener);
     }
 
     public void bulk(BulkRequest request, ActionListener<BulkResponse> listener) {
         request.listenerThreaded(true);
-        client.bulk(request, listener);
+        client.bulk(preProcess(request), listener);
     }
 
     public ActionFuture<DeleteResponse> delete(DeleteRequest request) {