update codegen signed builds

Author: mythz

src/ServiceStack.Redis/ServiceStack.Redis.Signed.csproj

@@ -157,6 +157,7 @@
     <Compile Include="Commands.cs" />
     <Compile Include="ConnectionUtils.cs" />
     <Compile Include="IHandleClientDispose.cs" />
+    <Compile Include="RedisManagerFactory.cs" />
     <Compile Include="RedisManagerPool.cs" />
     <Compile Include="RedisClient_Admin.cs" />
     <Compile Include="Generic\ManagedListGeneric.cs" />