Update to use VS2019 Enterprise build images (#442)

azure-pipelines.yml

@@ -34,13 +34,12 @@ jobs:
     - job: Code_check
       displayName: Code check
       pool:
-        # agent pool can't be read from a user-defined variable (Azure DevOps limitation)
         ${{ if eq(variables['System.TeamProject'], 'public') }}:
           name: NetCorePublic-Int-Pool
-          queue: BuildPool.Windows.10.Amd64.VS2019.BT.Open
+          queue: BuildPool.Windows.10.Amd64.VS2019.Open
         ${{ if ne(variables['System.TeamProject'], 'public') }}:
           name: NetCoreInternal-Int-Pool
-          queue: BuildPool.Windows.10.Amd64.VS2019.BT
+          queue: BuildPool.Windows.10.Amd64.VS2019
       steps:
       - powershell: ./restore.cmd -ci; ./eng/scripts/CodeCheck.ps1 -ci
         displayName: Run eng/scripts/CodeCheck.ps1
@@ -61,11 +60,12 @@ jobs:
     jobs:
     - job: Windows
       pool:
-        # agent pool can't be read from a user-defined variable (Azure DevOps limitation)
         ${{ if eq(variables['System.TeamProject'], 'public') }}:
-          name: dotnet-external-vs2019-preview
+          name: NetCorePublic-Int-Pool
+          queue: BuildPool.Windows.10.Amd64.VS2019.Open
         ${{ if ne(variables['System.TeamProject'], 'public') }}:
-          name: dotnet-internal-vs2019-preview
+          name: NetCoreInternal-Int-Pool
+          queue: BuildPool.Windows.10.Amd64.VS2019
       strategy:
         matrix:
           debug: