expand tar gz support

[dzmitry-lahoda]

Expand-Archive to support https://dl.k8s.io/v1.15.2/kubernetes-client-windows-amd64.tar.gz

As of 6.2.1 it fails with

At C:\program files\powershell\6\Modules\Microsoft.PowerShell.Archive\Microsoft.PowerShell.Archive.psm1:969 char:13
+             throw $invalidFileFormatException
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : OperationStopped: (:) [], FileFormatException
+ FullyQualifiedErrorId :