Add alias for some properties to avoid breaking change for keyvault (#22424)

Author: dolauli

src/KeyVault/KeyVault.Sdk/Customized/MHSMNetworkRuleSet.cs

@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is regenerated.
+
+namespace Microsoft.Azure.Management.KeyVault.Models
+{
+    public partial class MhsmNetworkRuleSet
+    {
+        /// <summary>
+        /// This is an alias to the IPRules property. This is for backward compatibility.
+        /// This property will be deprecated in the future, please use IPRules instead.
+        /// </summary>
+        public System.Collections.Generic.IList<MhsmipRule> IpRules {get=>IPRules; set=>IPRules=value; }
+    }
+}

src/KeyVault/KeyVault.Sdk/Customized/NetworkRuleSet.cs

@@ -23,5 +23,10 @@ partial void CustomInit()
             // default values for properties IpRules and VirtualNetworkRules are 'null'
             // and so no explicit customization is necessary.
         }
+        /// <summary>
+        /// This is an alias to the IPRules property. This is for backward compatibility.
+        /// This property will be deprecated in the future, please use IPRules instead.
+        /// </summary>
+        public System.Collections.Generic.IList<IPRule> IpRules {get=>IPRules; set=>IPRules=value; }
     }
 }