Add -t -DDUMP_CERTS option to mod_ssl which dumps the filenames of all

configured SSL certificates to stdout, useful for cron-ing through a
"do I need to renew any of my certificates this week" tool:

* modules/ssl/ssl_engine_config.c (ssl_hook_ConfigTest): New function.

* modules/ssl/mod_ssl.c (ssl_register_hooks): ...register it as a
test_config hook.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@105741 13f79535-47bb-0310-9956-ffa450edef68