Fixes based on Azure#6062

Author: MiYanni

src/ResourceManager/AzureBackup/Commands.AzureBackup/Cmdlets/Restore/RestoreAzureRMBackupItem.cs

@@ -50,7 +50,9 @@ public override void ExecuteCmdlet()
                     Region = RecoveryPoint.Location,
                 };
 
-                string azureIaaSVMRecoveryInputsCSMObjectString = JsonConvert.SerializeObject(azureIaaSVMRecoveryInputsCSMObject);
+                string azureIaaSVMRecoveryInputsCSMObjectString = JsonConvert.SerializeObject(
+                    azureIaaSVMRecoveryInputsCSMObject, 
+                    new JsonSerializerSettings { DateFormatHandling = DateFormatHandling.MicrosoftDateFormat });
 
                 CSMRestoreRequest csmRestoreRequest = new CSMRestoreRequest()
                 {

src/ResourceManager/RecoveryServices/Commands.RecoveryServices/Common/PSRecoveryServicesVaultExtendedInfoClient.cs

@@ -150,7 +150,9 @@ public string GetCurrentVaultChannelIntegrityKey()
                 if (cloudException != null && cloudException.Response != null
                     && !string.IsNullOrEmpty(cloudException.Response.Content))
                 {
-                    rpError.Error error = JsonConvert.DeserializeObject<rpError.Error>(cloudException.Response.Content);
+                    rpError.Error error = JsonConvert.DeserializeObject<rpError.Error>(
+                        cloudException.Response.Content,
+                        new JsonSerializerSettings { DateFormatHandling = DateFormatHandling.MicrosoftDateFormat });
 
                     if (error.ErrorCode.Equals(
                         RpErrorCode.ResourceExtendedInfoNotFound.ToString(),