adds directory control for errors

manifests/params.pp

@@ -123,10 +123,13 @@ $hy_service           = 'haproxy'
 
 # directories
 $hy_main_dir          = '/etc/haproxy'
+$hy_errors_dir        = "${hy_main_dir}/errors"
 
 # files
 $hy_main_config       = "${hy_main_dir}/haproxy.cfg"
 $hy_config_head_erb   = 'cd_haproxy/haproxy_head.erb'
+$hy_400_file          = "${hy_errors_dir}/400.http"
+$hy_400_erb           = 'cd_haproxy/400_http.erb'
 
 # includes must be last