add file sign info

Author: nagilson

src/Installer/Microsoft.Dotnet.Installation/Install.sign.proj

@@ -19,7 +19,17 @@
 
   <Import Project="$(NuGetPackageRoot)microsoft.dotnet.signtool\$(MicrosoftDotNetSignToolVersion)\build\Microsoft.DotNet.SignTool.props" />
 
+  <!-- The name of the .NET specific certificate, which is a general replacement for Microsoft400
+       If UseDotNetCert is specific in a repo's eng/Signing.props, all usage of Microsoft400 is replaced
+       with MicrosoftDotNet500 -->
+  <PropertyGroup>
+    <DotNetCertificateName>MicrosoftDotNet500</DotNetCertificateName>
+    <UseDotNetCertificate>false</UseDotNetCertificate>
+  </PropertyGroup>
+
   <ItemGroup>
+    <FileExtensionSignInfo Include=".nupkg" CertificateName="NuGet" />
+    <FileExtensionSignInfo Include=".dll;.exe;.mibc;.msi" CertificateName="Microsoft400" />
     <ItemsToSign Include="$(PackagesDir)**\Microsoft.Dotnet.Installation*.nupkg">
       <Authenticode>NuGet</Authenticode>
     </ItemsToSign>