icinga2::config: hardcode '/etc/icinga2' once less

refs #6842

.vagrant-puppet/modules/icinga2/manifests/config.pp

@@ -17,15 +17,14 @@
 #   }
 #
 #   Provide configuration file '/etc/icinga2/constants.conf'
-#   from 'puppet:///modules/icinga2_dev/etc/icinga2/constants.conf'
-#   ('/path/to/puppet/modules/icinga2_dev/files/etc/icinga2/constants.conf')
+#   from 'puppet:///modules/icinga2_dev/constants.conf'
+#   ('/path/to/puppet/modules/icinga2_dev/files/constants.conf')
 #
 define icinga2::config ($source) {
   include icinga2
 
-  $path = "/etc/icinga2/${name}.conf"
-  file { $path:
-    source  => "${source}${path}",
+  file { "/etc/icinga2/${name}.conf":
+    source  => "${source}/${name}.conf",
     owner   => 'icinga',
     group   => 'icinga',
     require => Class['icinga2'],