provide vhost and port as configuration option

Author: biplovkc

src/ServiceCollectionExtensions.cs

@@ -13,21 +13,25 @@ public static IServiceCollection AddRabbitMqEventBus(this IServiceCollection ser
         });
 
     public static IServiceCollection RegisterRabbitMqConnection(this IServiceCollection services, ILogger logger, string hostName,
-        string userName, string password, int retryCount = 5)
+        string userName, string password, string vHost = null, int port = 5672, int retryCount = 5)
     {
         return services.AddSingleton<IRabbitMQPersistentConnection>(_ =>
         {
             var factory = new ConnectionFactory
             {
                 HostName = hostName,
-                DispatchConsumersAsync = true
+                DispatchConsumersAsync = true,
+                Port = port
             };
 
             if (!string.IsNullOrWhiteSpace(userName))
                 factory.UserName = userName;
 
             if (!string.IsNullOrWhiteSpace(password))
                 factory.Password = password;
+
+            if (!string.IsNullOrWhiteSpace(vHost))
+                factory.VirtualHost = vHost;
 
             return new DefaultRabbitMQPersistentConnection(factory, logger, retryCount);
         });