fix failing nodes stats api due to renamed percolator key on response

Author: Mpdreamz

src/Nest/Cluster/ClusterStats/ClusterIndicesStats.cs

@@ -19,7 +19,7 @@ public class ClusterIndicesStats
 		public FielddataStats Fielddata { get; internal set; }
 
 		[JsonProperty("percolate")]
-		public PercolateStats Percolate { get; internal set; }
+		public PercolatorStats Percolate { get; internal set; }
 
 		[JsonProperty("query_cache")]
 		public QueryCacheStats QueryCache { get; internal set; }

src/Nest/CommonOptions/Stats/PercolateStats.cs

@@ -38,8 +38,8 @@ public class IndexStats
 		[JsonProperty(PropertyName = "fielddata")]
 		public FielddataStats Fielddata { get; set; }
 
-		[JsonProperty(PropertyName = "percolate")]
-		public PercolateStats Percolate { get; set; }
+		[JsonProperty(PropertyName = "percolator")]
+		public PercolatorStats Percolator { get; set; }
 
 		[JsonProperty(PropertyName = "completion")]
 		public CompletionStats Completion { get; set; }

src/Nest/Indices/Monitoring/IndicesStats/IndexStats.cs

@@ -493,7 +493,7 @@
     <Compile Include="CommonOptions\Stats\GetStats.cs" />
     <Compile Include="CommonOptions\Stats\IndexingStats.cs" />
     <Compile Include="CommonOptions\Stats\MergesStats.cs" />
-    <Compile Include="CommonOptions\Stats\PercolateStats.cs" />
+    <Compile Include="CommonOptions\Stats\PercolatorStats.cs" />
     <Compile Include="CommonOptions\Stats\PluginStats.cs" />
     <Compile Include="CommonOptions\Stats\QueryCacheStats.cs" />
     <Compile Include="CommonOptions\Stats\RecoveryStats.cs" />

src/Nest/Nest.csproj

@@ -73,7 +73,7 @@ protected void Assert(IndexStats index)
 			index.Get.Should().NotBeNull();
 			index.Indexing.Should().NotBeNull();
 			index.Merges.Should().NotBeNull();
-			index.Percolate.Should().NotBeNull();
+			index.Percolator.Should().NotBeNull();
 			index.QueryCache.Should().NotBeNull();
 			index.Recovery.Should().NotBeNull();