adamluz,
Are you actually changing things on your server causing the zz010_psa_httpd.conf file to be changed?
Now if not (make sure its NOT) how about this simple trick!
Log in as root, and do this:
cp /etc/httpd/conf.d/zz010_psa_httpd.conf /etc/httpd/conf.d/zz010_psa_httpd.conf.copy
(this copies your modified and working zz010_psa_httpd.conf and makes a copy zz010_psa_httpd.conf.copy)
Then set up a root cron, I would think hourly is enough, but if you know what is causing the issue adjust the time period) the cron MUST be root.
cp /etc/httpd/conf.d/zz010_psa_httpd.conf.copy /etc/httpd/conf.d/zz010_psa_httpd.conf
/etc/init.d/httpd restart
Now your backup copy rewrites over the messed up copy and restarts httpd