Added loading of mod_ssl

Reference to: 
http://forum.kaltura.org/t/upgrade-from-9-18-x-to-9-19-x-latest-release-as-on-date-caused-ssl-to-break/662/2?u=shaktidhar1 

Conditional loading of mod_ssl in case not being addressed in httpd/conf/ssl.conf
Please replace the port with the right installation token.