[release/v7.6] Add network isolation policy parameter to vPack pipeline (#26444)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.pipelines/PowerShell-vPack-Official.yml

@@ -23,6 +23,14 @@ parameters: # parameters are shown up in ADO UI in a build queue time
   displayName: 'Enable debug output'
   type: boolean
   default: false
+- name: netiso
+  displayName: "Network Isolation Policy"
+  type: string
+  values:
+    - KS4
+    - R1
+    - Netlock
+  default: "R1"
 
 name: vPack_$(Build.SourceBranchName)_Prod.${{ parameters.OfficialBuild }}_Create.${{ parameters.createVPack }}_Name.${{ parameters.vPackName}}_$(date:yyyyMMdd).$(rev:rr)
 
@@ -53,6 +61,8 @@ variables:
     value: ${{ iif ( parameters.OfficialBuild, 'v2/Microsoft.Official.yml@onebranchTemplates', 'v2/Microsoft.NonOfficial.yml@onebranchTemplates' ) }}
   - group: DotNetPrivateBuildAccess
   - group: certificate_logical_to_actual
+  - name: netiso
+    value: ${{ parameters.netiso }}
 # We shouldn't be using PATs anymore
 #  - group: mscodehub-feed-read-general
 
@@ -69,6 +79,11 @@ extends:
     platform:
       name: 'windows_undocked' # windows undocked
 
+    featureFlags:
+      WindowsHostVersion:
+        Version: 2022
+        Network: ${{ variables.netiso }}
+
     cloudvault:
       enabled: false