Make all concats notify the service
Make all concats notify the service

For code efficiency, make all concat resources notify the service.
Beware of overnotifying when adding additional files later that do not
actually require a service restart upon change.

ocadotechnology/puppetlabs-dhcp,archii/puppetlabs-dhcp,ocadotechnology/puppetlabs-dhcp,puppetlabs/puppetlabs-dhcp,archii/puppetlabs-dhcp,puppetlabs/puppetlabs-dhcp