Introduce Versions.props file to control version of CPS packages

This file will be used alongwith built version of project-system in C# dev kit for version upgrades

eng/imports/HostAgnostic.props

@@ -9,7 +9,6 @@
  <!-- Infrastructure -->
  <!-- Path Property: PkgCodecov -->
  <PackageReference Include="Codecov" ExcludeAssets="all" GeneratePathProperty="true" />
- <PackageReference Include="MicroBuild.Core.Sentinel" PrivateAssets="all" />
  <!-- Path Property: PkgMicrosoft_DiaSymReader_Pdb2Pdb -->
  <PackageReference Include="Microsoft.DiaSymReader.Pdb2Pdb" ExcludeAssets="all" GeneratePathProperty="true" />
  <PackageReference Include="Microsoft.DotNet.XliffTasks" PrivateAssets="all" />

eng/imports/Packages.targets

@@ -1,6 +1,8 @@
 <!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE.md file in the project root for more information. -->
 <Project>
 
+ <Import Project="Versions.props" />
+
  <ItemGroup>
  <!-- Infrastructure -->
  <!-- This package is deprecated. CodecovUploader is now the recommended package. -->
@@ -66,13 +68,13 @@
 
  <!-- CPS -->
  <!-- Find versions at https://dev.azure.com/azure-public/vside/_artifacts/feed/vs-impl -->
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.Analyzers" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.Query" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.SDK" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.SDK.Tools" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.VS" Version="17.7.294-pre" />
- <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.XamlTypes" Version="17.7.294-pre" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.Analyzers" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.Query" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.SDK" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.SDK.Tools" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.VS" Version="$(CPSPackageVersion)" />
+ <PackageReference Update="Microsoft.VisualStudio.ProjectSystem.XamlTypes" Version="$(CPSPackageVersion)" />
 
  <!-- Roslyn -->
  <PackageReference Update="Microsoft.CodeAnalysis" Version="4.7.0-1.final" />

eng/imports/Versions.props

@@ -0,0 +1,6 @@
+<!-- Any changes to this file or format requires updates in project-system-vscode -->
+<Project>
+ <PropertyGroup>
+ <CPSPackageVersion>17.7.294-pre</CPSPackageVersion>
+ </PropertyGroup>
+</Project>