Fix #3330 Add additional translog properties as per elastic/elasticsearch#28613… (#3358)

This commit adds additional translog properties as per elastic/elasticsearch#28613 and add properties we weren't mapping

Author: Mpdreamz

src/Nest/CommonOptions/Stats/TranslogStats.cs

@@ -8,11 +8,25 @@ public class TranslogStats
 		[JsonProperty("operations")]
 		public long Operations  { get; set; }
 
+		[JsonProperty("uncommitted_operations")]
+		public int UncommittedOperations  { get; set; }
+
 		[JsonProperty("size")]
 		public string Size { get; set; }
 
 		[JsonProperty("size_in_bytes")]
 		public long SizeInBytes  { get; set; }
 
+		[JsonProperty("uncommitted_size")]
+		public string UncommittedSize { get; set; }
+
+		[JsonProperty("uncommitted_size_in_bytes")]
+		public long UncommittedSizeInBytes  { get; set; }
+
+		/// <remarks>
+		/// Valid only for Elasticsearch 6.3.0+
+		/// </remarks>
+		[JsonProperty("earliest_last_modified_age")]
+		public long EarliestLastModifiedAge  { get; set; }
 	}
-}
+}