updated regex (Azure#10469)

Author: sambitratha

src/RecoveryServices/RecoveryServices.Backup.Models/CommonModels/Utils.cs

@@ -75,7 +75,8 @@ public static string GetString<T>(IEnumerable<T> objList)
     /// </summary>
     public class IdUtils
     {
-        static readonly string UriFormat = @"/Subscriptions/(?<subscriptionsId>.+)/resourceGroups" +
+        static readonly string UriFormat = @"/(Subscriptions|subscriptions)/(?<subscriptionsId>.+)"+
+            "/(resourceGroups|resourcegroups)" +
             @"/(?<resourceGroupName>.+)/providers/(?<providersName>.+)" +
             "/vaults/(?<BackupVaultName>.+)/backupFabrics/(?<BackupFabricName>.+)" +
             "/protectionContainers/(?<containersName>.+)";