Fix #1463: ScriptFile and ScriptId not serialized

Author: gmarz

src/Nest/DSL/Bulk/BulkUpdateDescriptor.cs

@@ -79,6 +79,8 @@ public override object GetBody()
 			{
 				_PartialUpdate = this.Doc,
 				_Script = this.Script,
+				_ScriptId = this.ScriptId,
+				_ScriptFile = this.ScriptFile,
 				_Lang = this.Lang,
 				_Params = this.Params,
 				_Upsert = this.Upsert,
@@ -130,6 +132,8 @@ protected override object GetBulkOperationBody()
 			{
 				_PartialUpdate = Self.Doc,
 				_Script = Self.Script,
+				_ScriptId = Self.ScriptId,
+				_ScriptFile = Self.ScriptFile,
 				_Lang = Self.Lang,
 				_Params = Self.Params,
 				_Upsert = Self.Upsert,

src/Nest/Domain/Bulk/BulkUpdateBody.cs

@@ -18,6 +18,12 @@ internal class BulkUpdateBody<TDocument, TPartialUpdate>
 
 		[JsonProperty(PropertyName = "script")]
 		internal string _Script { get; set; }
+
+		[JsonProperty(PropertyName = "script_id")]
+		internal string _ScriptId { get; set; }
+
+		[JsonProperty(PropertyName = "script_file")]
+		internal string _ScriptFile { get; set; }
 
 		[JsonProperty(PropertyName = "params")]
 		[JsonConverter(typeof(DictionaryKeysAreNotPropertyNamesJsonConverter))]

src/Tests/Nest.Tests.Unit/Core/Bulk/BulkOperations.json

@@ -4,4 +4,4 @@
 {"id":3,"loc":0,"startedOn":"0001-01-01T00:00:00","longValue":0,"floatValue":0.0,"doubleValue":0.0,"boolValue":false,"locScriptField":0,"stupidIntIWantAsLong":0}
 { "delete" :  {"_index":"nest_test_data","_type":"elasticsearchprojects","_id":"4","_version_type": "external_gte"} }
 { "update" :  {"_index":"nest_test_data","_type":"elasticsearchprojects","_id":"3","_version_type": "external"} }
-{ "doc" : { "name" : "NEST" } }
+{ "doc" : { "name" : "NEST" }, "script_file": "myfile", "script_id":  "myscript", "lang": "groovy" }

src/Tests/Nest.Tests.Unit/Core/Bulk/BulkTests.cs

@@ -28,6 +28,9 @@ public void BulkOperations()
 					.IdFrom(new ElasticsearchProject { Id = 3 })
 					.VersionType(VersionType.External)
 					.Doc(new { name = "NEST"})
+					.ScriptFile("myfile")
+					.ScriptId("myscript")
+					.Lang("groovy")
 				)
 			);
 			var status = result.ConnectionStatus;