Use Elasticsearch 2.0 ReindexOnServerResponse json structure

Backported unit test was failing because it uses the 5.0 json structure. Updated to use a 2.4.1 response
Remove duplicate referenced tests
Update tests.yaml to Elasticsearch 2.4.1

Author: russcam

src/Tests/Reproduce/GithubIssue2309.cs

@@ -29,17 +29,12 @@ public void FailedReIndexResponseMarkedAsInvalidAndContainFailures()
 				""total"": 1,
 				""updated"": 0,
 				""created"": 0,
-				""deleted"": 0,
 				""batches"": 1,
 				""version_conflicts"": 0,
 				""noops"": 0,
-				""retries"": {
-					""bulk"": 0,
-					""search"": 0
-				},
+				""retries"": 0,
 				""throttled_millis"": 0,
-				""requests_per_second"": -1.0,
-				""throttled_until_millis"": 0,
+				""requests_per_second"": ""unlimited"",
 				""failures"": [{
 					""index"": ""employees-v2"",
 					""type"": ""employee"",

src/Tests/Tests.csproj

@@ -571,8 +571,6 @@
     <Compile Include="Document\Multiple\UpdateByQuery\UpdateByQueryApiTests.cs" />
     <Compile Include="Document\Multiple\UpdateByQuery\UpdateByQueryUrlTests.cs" />
     <Compile Include="Reproduce\GithubIssue2309.cs" />
-    <Compile Include="Search\MultiSearch\MultiSearchApiTests.cs" />
-    <Compile Include="Search\MultiSearch\MultiSearchInvalidApiTests.cs" />
     <Compile Include="Framework\Extensions\UriExtensions.cs" />
     <Compile Include="Framework\Integration\CallUniqueValues.cs" />
     <Compile Include="Framework\Integration\ClientMethod.cs" />

src/Tests/tests.yaml

@@ -1,7 +1,7 @@
 # mode either u (unit test), i (integration test) or m (mixed mode)
-mode: u
+mode: m
 # the elasticsearch version that should be started
-elasticsearch_version: 2.4.0
+elasticsearch_version: 2.4.1
 # whether we want to forcefully reseed on the node, if you are starting the tests with a node already running
 force_reseed: true
 # do not spawn nodes as part of the test setup but rely on a manually started es node being up