tent/cache config read

I know that it might look better etc, but it would be looking non-uniform with the rest of the log, also not sure if it would not break any parser (e.g. logwatch) which might have expected them without indentation.  Also it is not pertinent to this fix/change -- if we are to do that later, we would do it throughout the logs.  Also you might like to know about e.g. --log-traceback option to fail2ban-tests