explictly use the change action for udevadm trigger

centos 6 defaults to --action=add
https://lists.ubuntu.com/archives/ubuntu-devel/2009-January/027260.html
https://bugzilla.redhat.com/show_bug.cgi?id=570355

Author: Eric Cook

manifests/params.pp

@@ -9,7 +9,7 @@
     'debian': {
       $udev_package    = 'udev'
       $udevlogpriority = 'udevadm control --log-priority'
-      $udevtrigger     = 'udevadm trigger'
+      $udevtrigger     = 'udevadm trigger --action=change'
     }
     'redhat': {
       if $::operatingsystem == 'Fedora' {
@@ -30,12 +30,12 @@
           }
           '6': {
             $udev_package    = 'udev'
-            $udevtrigger     = 'udevadm trigger'
+            $udevtrigger     = 'udevadm trigger --action=change'
             $udevlogpriority = 'udevadm control --log-priority'
           }
           '7': {
             $udev_package    = 'systemd'
-            $udevtrigger     = 'udevadm trigger'
+            $udevtrigger     = 'udevadm trigger --action=change'
             $udevlogpriority = 'udevadm control --log-priority'
           }
           default: {

spec/classes/udevadm/trigger_spec.rb

@@ -11,7 +11,7 @@
 
     it { should contain_class('udev::udevadm::trigger') }
     it do
-      should contain_exec('udevadm trigger').with({
+      should contain_exec('udevadm trigger --action=change').with({
         :refreshonly => true,
         :path        => ['/sbin'],
       })