refactor.

src/Cap.Consistency/Builder/BrokerOptions.cs

-namespace Cap.Consistency
-{
-    public class BrokerOptions
-    {
-        public string HostName { get; set; }
-
-    }
-}
\ No newline at end of file

src/Cap.Consistency/Builder/ConsistencyMiddleware.cs

-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
-using Cap.Consistency.Routing;
-
-namespace Cap.Consistency.Builder
-{
-    public class ConsistencyMiddleware
-    {
-        private readonly ITopicRoute _router;
-
-        public ConsistencyMiddleware(ITopicRoute router) {
-            _router = router;
-        }
-
-        public async Task Invoke() {
-            var context = new TopicRouteContext();
-            context.Routes.Add(_router);
-
-            await _router.RouteAsync(context);
-        }
-    }
-}