Feature/hacking consul file config (#157)

* moving things around to see if I can get consul to store fileconfiguration rather than ocelotconfiguration

* more refactoring to see if we can get a test for the feature

* acceptance test passing for updating in consul..need to sort object comparison out

* fixed the failing tests

test/Ocelot.UnitTests/DependencyInjection/ServiceCollectionExtensionTests.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Ocelot.DependencyInjection;
+using Shouldly;
+using TestStack.BDDfy;
+using Xunit;
+
+namespace Ocelot.UnitTests.DependencyInjection
+{
+    public class ServiceCollectionExtensionTests
+    {
+        private Exception _ex;
+
+        [Fact]
+        public void should_set_up_services()
+        {
+            this.When(x => WhenISetUpOcelotServices())
+                .Then(x => ThenAnExceptionIsntThrown())
+                .BDDfy();
+        }
+
+        private void WhenISetUpOcelotServices()
+        {
+            try
+            {
+                IWebHostBuilder builder = new WebHostBuilder();
+                IConfigurationRoot configRoot = new ConfigurationRoot(new List<IConfigurationProvider>());
+                IServiceCollection services = new ServiceCollection();
+                services.AddSingleton(builder);
+                services.AddOcelot(configRoot);
+            }
+            catch (Exception e)
+            {
+                _ex = e;
+            }
+        }
+
+        private void ThenAnExceptionIsntThrown()
+        {
+            _ex.ShouldBeNull();
+        }
+    }
+}