Fixes #5589: Generate an Apache 2.4 compatible rudder-networks-24.conf f...

...ile

Ticket: http://www.rudder-project.org/redmine/issues/5589

To be merged in 2.11
I would rather we use a shared variable for the path for to [/usr]/sbin/service, such as ```${paths.path[service]}```. If we update the stdlib in ncf, we could even just use ```${classic_services.baseinit[www]}```. But that can be for another time.