Add status to cat indices response

Closes #1340

Author: gmarz

src/Nest/Domain/Cat/CatIndicesRecord.cs

@@ -28,5 +28,8 @@ public class CatIndicesRecord : ICatRecord
 
 		[JsonProperty("store.size")]
 		public string StoreSize { get; set; }
+
+		[JsonProperty("status")]
+		public string Status { get; set; }
 	}
 }