Fix 3698: Update ClusterHealthResponse.cs to align with ClusterHealthResponse.java (#3699)

Updated ClusterHealthResponse.cs to align with ClusterHealthResponse.java. Previously missing fields included "ActiveShardsPerecentAsNumber", "DelayedUnassignedShards", "NumberOfInFlightFetch", and "TaskMaxWaitTimeInQueueInMilliseconds".

Co-Authored-By: SpencerLN <spencer@spencerniemi.com>
(cherry picked from commit 0550076)

Author: russcam

src/Nest/Cluster/ClusterHealth/ClusterHealthResponse.cs

@@ -13,9 +13,15 @@ public class ClusterHealthResponse : ResponseBase
 		[DataMember(Name = "active_shards")]
 		public int ActiveShards { get; internal set; }
 
+		[DataMember(Name = "active_shards_percent_as_number")]
+		public double ActiveShardsPercentAsNumber { get; internal set; }
+
 		[DataMember(Name = "cluster_name")]
 		public string ClusterName { get; internal set; }
 
+		[DataMember(Name = "delayed_unassigned_shards")]
+		public int DelayedUnassignedShards { get; internal set; }
+
 		[DataMember(Name = "indices")]
 		[JsonFormatter(typeof(ResolvableReadOnlyDictionaryFormatter<IndexName, IndexHealthStats>))]
 		public IReadOnlyDictionary<IndexName, IndexHealthStats> Indices { get; internal set; } =
@@ -27,6 +33,9 @@ public class ClusterHealthResponse : ResponseBase
 		[DataMember(Name = "number_of_data_nodes")]
 		public int NumberOfDataNodes { get; internal set; }
 
+		[DataMember(Name = "number_of_in_flight_fetch")]
+		public int NumberOfInFlightFetch { get; internal set; }
+
 		[DataMember(Name = "number_of_nodes")]
 		public int NumberOfNodes { get; internal set; }
 
@@ -39,6 +48,9 @@ public class ClusterHealthResponse : ResponseBase
 		[DataMember(Name = "status")]
 		public Health Status { get; internal set; }
 
+		[DataMember(Name = "task_max_waiting_in_queue_millis")]
+		public long TaskMaxWaitTimeInQueueInMilliseconds { get; internal set; }
+
 		[DataMember(Name = "timed_out")]
 		public bool TimedOut { get; internal set; }
 

src/Tests/Tests/Cluster/ClusterHealth/ClusterHealthApiTests.cs

@@ -69,6 +69,11 @@ protected override void ExpectResponse(ClusterHealthResponse response)
 			response.NumberOfDataNodes.Should().BeGreaterOrEqualTo(1);
 			response.ActivePrimaryShards.Should().BeGreaterOrEqualTo(1);
 			response.ActiveShards.Should().BeGreaterOrEqualTo(1);
+			response.ActiveShardsPercentAsNumber.Should().BePositive();
+			response.DelayedUnassignedShards.Should().Equals(0);
+			response.NumberOfInFlightFetch.Should().BeGreaterOrEqualTo(0);
+			response.TaskMaxWaitTimeInQueueInMilliseconds.Should().BeGreaterOrEqualTo(0);
+
 			response.Indices.Should()
 				.NotBeEmpty()
 				.And.ContainKey(Index<Developer>());