Install SDK modules from the CFS central package feed (#3666)

Installs the Microsoft.Graph[.Beta] modules from the PowerShell_V2_Build Azure Artifacts feed instead of PSGallery (network isolation / CFS compliance). Requires a pipeline run to validate.


Copilot-Session: 9bd6fe40-0d69-4e3f-927b-8628c0ab6d34

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Ramses Sanchez-Hernandez <63934382+ramsessanchez@users.noreply.github.com>

Author: 3 people

.azure-pipelines/common-templates/install-sdk.yml

@@ -5,15 +5,24 @@ steps:
     targetType: 'inline'
     pwsh: true
     script: |
+          # Register the central CFS feed (network-isolation compliance) and install the SDK modules from it.
+          $token = ConvertTo-SecureString "$env:SYSTEM_ACCESSTOKEN" -AsPlainText -Force
+          $cred = [System.Management.Automation.PSCredential]::new("azure", $token)
+          $feedUrl = "https://microsoftgraph.pkgs.visualstudio.com/0985d294-5762-4bc2-a565-161ef349ca3e/_packaging/PowerShell_V2_Build/nuget/v2"
+          if (-not (Get-PSRepository -Name PowerShell_V2_Build -ErrorAction SilentlyContinue)) {
+              Register-PSRepository -Name PowerShell_V2_Build -SourceLocation $feedUrl -InstallationPolicy Trusted -Credential $cred
+          }
           try{
               # Installing Beta module.
-              Install-Module Microsoft.Graph.Beta -Repository PSGallery -Scope AllUsers -AcceptLicense -SkipPublisherCheck -Force -AllowClobber
+              Install-Module Microsoft.Graph.Beta -Repository PowerShell_V2_Build -Credential $cred -Scope AllUsers -AcceptLicense -SkipPublisherCheck -Force -AllowClobber
           }catch{
                 echo "Error when installing Beta"
           }
           try{
               # Installing V1 module.
-              Install-Module Microsoft.Graph -Repository PSGallery -Scope AllUsers -AcceptLicense -SkipPublisherCheck -Force -AllowClobber
+              Install-Module Microsoft.Graph -Repository PowerShell_V2_Build -Credential $cred -Scope AllUsers -AcceptLicense -SkipPublisherCheck -Force -AllowClobber
           }catch{
                 echo "Error when installing V1"
-          }
+          }
+  env:
+    SYSTEM_ACCESSTOKEN: $(System.AccessToken)