Fix a bug preventing nginx from being reloaded after generating a cert

Change the notifies property to :immediately in nginx_certbot_site. This
way the vhost template is recreated and then triggers a reload of the
nginx service. The previous code resulted in nginx not being reloaded,
as the action had already been queued earlier.

site-cookbooks/kosmos-nginx/resources/nginx_certbot_site.rb

@@ -47,6 +47,6 @@ action :create do
       ::File.exist?("#{node['nginx']['dir']}/sites-enabled/#{domain}_certbot") &&
         !::File.exist?("/etc/letsencrypt/live/#{domain}/fullchain.pem")
     end
-    notifies :create, "template[#{node['nginx']['dir']}/sites-available/#{site}]", :delayed
+    notifies :create, "template[#{node['nginx']['dir']}/sites-available/#{site}]", :immediately
   end
 end