fix: create symlink for tar

* we removed the bsdtar since windows comes with it now in 614bdc0
* however, some older versions of garden-runc still expect it to live there
* this adds a symlink to maintain backwards compatiblity with older garden-runc releases

Author: KauzClay

modules/BOSH.Agent/BOSH.Agent.Tests.ps1

@@ -91,6 +91,7 @@ Describe "BOSH.Account" {
             Test-Path (Join-Path $depsDir "bosh-blobstore-dav.exe") | Should -Be $True
             Test-Path (Join-Path $depsDir "bosh-blobstore-s3.exe") | Should -Be $True
             Test-Path (Join-Path $depsDir "bosh-blobstore-gcs.exe") | Should -Be $True
+            Test-Path (Join-Path $depsDir "tar.exe") | Should -Be $True
         }
     }
 

modules/BOSH.Agent/BOSH.Agent.psm1

@@ -67,6 +67,8 @@ function Copy-Agent
     Open-Zip $agentZipPath $boshDir
     Move-Item (Join-Path $boshDir (Join-Path "deps" "*")) $depsDir
     Remove-Item -Path (Join-Path $boshDir "deps") -Force
+
+    New-Item -Path (Join-Path $depsDir "tar.exe") -ItemType SymbolicLink -V "C:\Windows\system32\tar.exe"
 }