[AKS] fix a bug in zip on windows (#20832)

* [AKS] fix a bug in zip on windows

* update changelog

* update changelog

Author: YanaXu

src/Aks/Aks/ChangeLog.md

@@ -18,6 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Fixed the issue that Invoke-AzAksRunCommand will fail when the directory for parameter CommandContextAttachment contains sub-directories. [#20734]
 * Added parameter `-AadProfile` for `New-AzAksCluster` and `Set-AzAksCluster`
 * Added parameter `-NodeHostGroupID` for `New-AzAksCluster` and parameter `-HostGroupID` for `New-AzAksNodePool`
 

src/Aks/Aks/Commands/RunAzureRmAksCommand.cs

@@ -154,7 +154,7 @@ private string GetCommandContext()
                 {
                     foreach (string filepath in filesToAttach)
                     {
-                        var relativePath = filepath.Replace(rootDirectory, "").Trim('/').Trim('\\');
+                        var relativePath = filepath.Replace(rootDirectory, "").Replace('\\', '/').Trim('/');
                         var memoryZipFile = archive.CreateEntry(relativePath);
                         var fileContent = File.ReadAllText(filepath);
                         using (var entryStream = memoryZipFile.Open())