Converted nagios.cfg to new variable names
Converted cgi.cfg to new variable names
Updated plugin tasks to use new variables, made custom plugins dir optional
Updated variable names for config file paths
Updated config tasks to use new variables, made custom config dir optional
Made apache username and password optional
Added Nagios SELinux module check
Added Nagios SELinux config file transfer
Added Nagios SELinux config file check
Added Nagios SELinux module compile
Added loading of Nagios SELinux custom module