Convert bool param to Switch

scripts/Common/Config/powershell/lib.ps1

@@ -6,7 +6,7 @@ $null = New-Module {
             [string]$Category = $null,
             [Parameter(Position=0, Mandatory=$true)]
             [string]$Statement,
-            [bool]$Overwrite = $false
+            [switch]$Overwrite = $false
         )
 
         [System.Collections.Generic.List[string]] $shells = @();