Enable MicroBuild code signing

Directory.Build.props

@@ -14,9 +14,6 @@
     <RepositoryRoot>$(MSBuildThisFileDirectory)</RepositoryRoot>
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)build\Key.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
-    <AssemblySigningCertName>Microsoft</AssemblySigningCertName>
-    <PackageSigningCertName>MicrosoftNuGet</PackageSigningCertName>
-    <PublicSign Condition="'$(OS)' != 'Windows_NT'">true</PublicSign>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <!-- Workaround microsoft/msbuild#3626 -->
     <AddSyntheticProjectReferencesForSolutionDependencies>false</AddSyntheticProjectReferencesForSolutionDependencies>

src/UI/Microsoft.AspNetCore.Identity.UI.csproj

@@ -20,7 +20,7 @@
     <EmbeddedResource Remove="wwwroot/**/LICENSE*" />
     <None Remove="wwwroot/**/.bower.json" />
     <None Remove="wwwroot/**/LICENSE*" />
-    <None Include="THIRD-PARTY-NOTICES" Pack="true" PackagePath="/" />
+    <None Include="THIRD-PARTY-NOTICES.txt" Pack="true" PackagePath="/" />
 
     <Content Update="**\*.cshtml" Pack="false" />
   </ItemGroup>