Output the UI when repairing port collisions

lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb

@@ -89,6 +89,12 @@ module Vagrant
               args[1] = repaired_port
 
               @logger.info("Repaired FP collision: #{host_port} to #{repaired_port}")
+
+              # Notify the user
+              env[:ui].info(I18n.t("vagrant.actions.vm.forward_ports.fixed_collision",
+                                   :host_port  => host_port.to_s,
+                                   :guest_port => guest_port.to_s,
+                                   :new_port   => repaired_port.to_s))
             end
           end
         end