[Storage] Show more error information when cmdlet failed with StorageException.

Author: blueww

src/Storage/Storage.Management/ChangeLog.md

@@ -18,6 +18,9 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Show more error information when cmdlet failed with StorageException 
+
+## Version 1.4.0
 * Support Kind FileStorage and SkuName Premium_ZRS when create Storage account
     - New-AzStorageAccount
 * Clarified description of blob immutability cmdlet

src/Storage/Storage/Common/StorageExceptionUtil.cs

@@ -77,9 +77,28 @@ public static StorageException RepackStorageException(this StorageException e)
                     e.Message,
                     e.RequestInformation.HttpStatusCode,
                     e.RequestInformation.HttpStatusMessage);
+
+                if (e.RequestInformation.ExtendedErrorInformation != null)
+                {
+                    String extendErrorInfo = String.Format(
+                        "\nErrorCode: {0}\nErrorMessage: {1}",
+                        e.RequestInformation.ExtendedErrorInformation.ErrorCode,
+                        e.RequestInformation.ExtendedErrorInformation.ErrorMessage);
+
+                    if (e.RequestInformation.ExtendedErrorInformation.AdditionalDetails != null
+                        && e.RequestInformation.ExtendedErrorInformation.AdditionalDetails.Count > 0)
+                    {
+                        string additionalDetails = string.Empty;
+                        foreach (var key in e.RequestInformation.ExtendedErrorInformation.AdditionalDetails)
+                        {
+                            additionalDetails += String.Format("\n{0}: {1}", key.Key, key.Value);
+                        }
+                        extendErrorInfo += additionalDetails;
+                    }
+                    msg += extendErrorInfo;
+                }
                 e = new StorageException(e.RequestInformation, msg, e);
             }
-
             return e;
         }
     }