Print Pester versions in CI

Author: andyleejordan

.vsts-ci/templates/ci-general.yml

@@ -46,6 +46,7 @@ steps:
   inputs:
     targetType: inline
     script: |
+      Get-Module -ListAvailable Pester
       Install-Module InvokeBuild -Scope CurrentUser -Force
       Invoke-Build
       Write-Host "##vso[task.setvariable variable=vsixPath]$(Resolve-Path powershell-*.vsix)"