Add support for "warning" volume status.

Author: aws-sdk-dotnet-automation

generator/ServiceModels/ec2/ec2-2016-11-15.api.json

@@ -52157,7 +52157,8 @@
       "enum":[
         "ok",
         "impaired",
-        "insufficient-data"
+        "insufficient-data",
+        "warning"
       ]
     },
     "VolumeStatusItem":{

generator/ServiceModels/ec2/ec2-2016-11-15.normal.json

@@ -67488,7 +67488,8 @@
       "enum":[
         "ok",
         "impaired",
-        "insufficient-data"
+        "insufficient-data",
+        "warning"
       ]
     },
     "VolumeStatusItem":{

sdk/src/Services/EC2/Generated/ServiceEnumerations.cs

@@ -24846,6 +24846,10 @@ public class VolumeStatusInfoStatus : ConstantClass
         /// Constant Ok for VolumeStatusInfoStatus
         /// </summary>
         public static readonly VolumeStatusInfoStatus Ok = new VolumeStatusInfoStatus("ok");
+        /// <summary>
+        /// Constant Warning for VolumeStatusInfoStatus
+        /// </summary>
+        public static readonly VolumeStatusInfoStatus Warning = new VolumeStatusInfoStatus("warning");
 
         /// <summary>
         /// This constant constructor does not need to be called if the constant