Merge pull request #2173 from mcalhoun/devel

Powershell throwing 'The variable cannot be retrieved because it has not been set' error

windows/setup.ps1

@@ -77,6 +77,10 @@ $psversion = $PSVersionTable.PSVersion.Major
 Set-Attr $result.ansible_facts "ansible_powershell_version" $psversion
 
 $winrm_https_listener_parent_path = Get-ChildItem -Path WSMan:\localhost\Listener -Recurse | Where-Object {$_.PSChildName -eq "Transport" -and $_.Value -eq "HTTPS"} | select PSParentPath
+$winrm_https_listener_path = $null
+$https_listener = $null
+$winrm_cert_thumbprint = $null
+$uppercase_cert_thumbprint = $null
 
 if ($winrm_https_listener_parent_path ) {
     $winrm_https_listener_path = $winrm_https_listener_parent_path.PSParentPath.Substring($winrm_https_listener_parent_path.PSParentPath.LastIndexOf("\"))