Update MSBuild.Sdk.Extras

src/Microsoft.VisualStudio.Validation/Microsoft.VisualStudio.Validation.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="MSBuild.Sdk.Extras">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;net45;portable-net45+win8+wp8+wpa81</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
@@ -47,11 +47,9 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <PackageReference Include="MicroBuild.VisualStudio" Version="$(MicroBuildPackageVersion)" />
-    <PackageReference Include="MSBuild.SDK.Extras" Version="1.1.0" />
     <PackageReference Include="GitLink" Version="3.2.0-unstable0014" PrivateAssets="all" />
     <!--<PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="1.2.0-beta2" />-->
   </ItemGroup>
-  <Import Project="$(MSBuildSDKExtrasTargets)" Condition="Exists('$(MSBuildSDKExtrasTargets)')" />
   <Import Project="$(MSBuildExtensionsPath)\Microsoft\Multilingual App Toolkit\Microsoft.Multilingual.ResxResources.targets" Label="MultilingualAppToolkit" Condition="Exists('$(MSBuildExtensionsPath)\Microsoft\Multilingual App Toolkit\v$(MultilingualAppToolkitVersion)\Microsoft.Multilingual.ResxResources.targets')" />
   <Target Name="MATPrerequisite" BeforeTargets="PrepareForBuild" Condition="!Exists('$(MSBuildExtensionsPath)\Microsoft\Multilingual App Toolkit\Microsoft.Multilingual.ResxResources.targets')" Label="MultilingualAppToolkit">
     <Warning Text="$(MSBuildProjectFile) is Multilingual build enabled, but the Multilingual App Toolkit is unavailable during the build. If building with Visual Studio, please check to ensure that toolkit is properly installed." />

src/global.json

@@ -0,0 +1,5 @@
+{
+    "msbuild-sdks": {
+        "MSBuild.Sdk.Extras": "1.5.4"
+    }
+}