test: Add self-signed certificate for Windows tests

.github/workflows/go-windows.yml

@@ -27,11 +27,19 @@ jobs:
           New-LocalUser -Name $env:TEST_USER_NAME -Password $pw -Description "GitHub Action Test User"
           Add-LocalGroupMember -Group Administrators -Member $env:TEST_USER_NAME
 
-          & winrm quickconfig -force
+          # Already enabled
+          #Enable-PSRemoting -SkipNetworkProfileCheck -Force;
+
           & winrm set winrm/config/service/Auth '@{Basic="true"}'
           & winrm set winrm/config/service '@{AllowUnencrypted="true"}'
           & winrm set winrm/config/winrs '@{MaxMemoryPerShellMB="1024"}'
-          & winrm enumerate winrm/config/listener
+
+          # Read current cert
+          $certs = Get-ChildItem Cert:\LocalMachine\My
+          $certs
+          Export-Certificate -Cert $certs[0] -FilePath C:\temp\cert.pem
+
+          Get-ChildItem WSMan:\LocalHost\Listener
 
           Restart-Service winrm
 
@@ -42,7 +50,6 @@ jobs:
           WINRM_HOST: localhost
           WINRM_USER: ci-test
           WINRM_PASSWORD: ${{ secrets.WINDOWS_TEST_USER_RANDOM_PASSWORD }}  # only used inside the CI run
-          WINRM_SKIP_TLS: 1  # TODO: enable when HTTPs listener has been properly configured
-          WINRM_INSECURE: 1
+          WINRM_TLS_CA: 'C:\temp\cert.pem'
 
         run: go test -v ./...