Register ILogger<T> -> Logger<T> in default services

src/Microsoft.AspNet.Hosting/HostingServicesCollectionExtensions.cs

@@ -17,6 +17,7 @@ namespace Microsoft.Framework.DependencyInjection
         {
             var describe = new ServiceDescriber(config);
             services.TryAdd(describe.Singleton<ILoggerFactory, LoggerFactory>());
+            services.TryAdd(describe.Singleton(typeof(ILogger<>), typeof(Logger<>)));
             return services;
         }