Interactive Workspace dll signing...

My wild guess as to why the Workspaces dlls aren't signed in the Interactive
VSIX is that they're not marked "ForceIncludeInVSIX=true" (as most of the
other references are).

src/VisualStudio/VisualStudioInteractiveComponents/VisualStudioInteractiveComponents.csproj

@@ -123,18 +123,21 @@
       <Name>Features</Name>
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup</IncludeOutputGroupsInVSIXLocalOnly>
+      <ForceIncludeInVSIX>true</ForceIncludeInVSIX>
     </ProjectReference>
     <ProjectReference Include="..\..\Workspaces\Core\Desktop\Workspaces.Desktop.csproj">
       <Project>{2e87fa96-50bb-4607-8676-46521599f998}</Project>
       <Name>Workspaces.Desktop</Name>
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup</IncludeOutputGroupsInVSIXLocalOnly>
+      <ForceIncludeInVSIX>true</ForceIncludeInVSIX>
     </ProjectReference>
     <ProjectReference Include="..\..\Workspaces\Core\Portable\Workspaces.csproj">
       <Project>{5F8D2414-064A-4B3A-9B42-8E2A04246BE5}</Project>
       <Name>Workspaces</Name>
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup</IncludeOutputGroupsInVSIXLocalOnly>
+      <ForceIncludeInVSIX>true</ForceIncludeInVSIX>
     </ProjectReference>
     <ProjectReference Include="..\Setup\VisualStudioSetup.csproj">
       <Project>{201EC5B7-F91E-45E5-B9F2-67A266CCE6FC}</Project>