message: [vcpkg] msbuild: do not build vcpkgmetricsuploader when -disableMetrics
diff: <ItemGroup>
  <ProjectFile Include="vcpkglib\vcpkglib.vcxproj"/>
  <ProjectFile Include="vcpkg\vcpkg.vcxproj"/>
  - <ProjectFile Include="vcpkgmetricsuploader\vcpkgmetricsuploader.vcxproj"/>
  + <ProjectFile Include="vcpkgmetricsuploader\vcpkgmetricsuploader.vcxproj" Condition="'$(DISABLE_METRICS)'!='1'"/>
  </ItemGroup>
  <Target Name="Rebuild" DependsOnTargets="Clean;Build" />
  