Fix tests

Author: JamesNK

src/Http/Routing/test/UnitTests/Builder/EndpointRoutingApplicationBuilderExtensionsTest.cs

@@ -9,6 +9,7 @@
 using Microsoft.AspNetCore.Routing.Patterns;
 using Microsoft.AspNetCore.Routing.TestObjects;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Diagnostics.Metrics;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
 using Moq;
@@ -354,6 +355,7 @@ private IServiceProvider CreateServices(MatcherFactory matcherFactory)
             services.AddSingleton<MatcherFactory>(matcherFactory);
         }
 
+        services.AddMetrics();
         services.AddLogging();
         services.AddOptions();
         services.AddRouting();