Fix zone_config_check_same_setting

Fix zone_config_check_same_setting

Every time we edited a config zone_config_check_same_setting
returns that a identical config was found but this config was the config
we want to edit. So we now generate the id inside hook_new and pass the
id always to hook_parse_cmdline and to zone_config_check_same_setting.

So we can skip this config.

Fixes: #11451
Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>