(#1971) new $service_restart parameter to influence httpd.

[traylenator]

Adds a new parameter to apache and apache::service to
permit restart paramter to the httpd service to be set.

For instance this allows to a restart to be configured
as apachectl graceful for instance.

Fixes https://tickets.puppetlabs.com/browse/MODULES-1971

the change is fully backwards compatible.

[bmjen]

@traylenator Thanks for the well put together PR! This will be a welcomed param addition.

[tenajsystems]

@traylenator, how do i go about setting the service_restart parameter? I have tried setting service_restart like the code below but when i run puppet agent -t , no changes are made

class { 'apache':
  service_restart => '/usr/sbin/apachectl -k graceful',
}

Any thoughts on why the code I have above doesn't work?

[traylenator]

There has to be a configuration chnage somewhere?

[tenajsystems]

I thought it's supposed to make configuration changes but upon taking a second look, it appears it's not supposed to make any configuration changes and setting service_restart => '/usr/sbin/apachectl -k graceful' works as intended. Thanks!