update proxy and tmplate

templates/haproxy_backend_rule.erb

@@ -4,6 +4,8 @@
 
 backend   <%= backend_config['backend_name'] %>
 mode      <%= backend_config['be_mode'] %>
+balance   <%= backend_config['be_balance'] %>
+option    <%= backend_config['be_option'] %>
 <% if backend_config['be_server_name_array'] and !backend_config['be_server_name_array'].empty? -%>
 <% backend_config['be_server_name_array'].each do |be_server_name| -%>
 server    <%= be_server_name %>