Replaced internal systemd reload with external systemd module's one

.fixtures.yml

@@ -2,5 +2,6 @@ fixtures:
   repositories:
     archive: "https://github.com/voxpupuli/puppet-archive"
     stdlib: "https://github.com/puppetlabs/puppetlabs-stdlib"
+    systemd: "https://github.com/camptocamp/puppet-systemd"
   symlinks:
     "prometheus": "#{source_dir}"

manifests/config.pp

@@ -12,13 +12,14 @@
 
     # the vast majority of files here are init-files
     # so any change there should trigger a full service restart
+    # systemd reload comes from the systemd module
     if $::prometheus::restart_on_change {
       File {
         notify => [Class['::prometheus::run_service']],
       }
-      $systemd_notify = [Exec['prometheus-systemd-reload'], Class['::prometheus::run_service']]
+      $systemd_notify = [Exec['systemctl-daemon-reload'], Class['::prometheus::run_service']]
     } else {
-      $systemd_notify = Exec['prometheus-systemd-reload']
+      $systemd_notify = Exec['systemctl-daemon-reload']
     }
 
     case $prometheus::init_style {
@@ -45,11 +46,6 @@
           notify  => $systemd_notify,
           content => template('prometheus/prometheus.systemd.erb'),
         }
-        exec { 'prometheus-systemd-reload':
-          command     => 'systemctl daemon-reload',
-          path        => [ '/usr/bin', '/bin', '/usr/sbin' ],
-          refreshonly => true,
-        }
       }
       'sysv' : {
         file { '/etc/init.d/prometheus':

metadata.json

@@ -12,6 +12,10 @@
       "name":"puppet/archive",
       "version_requirement":">=1.3.0 <2.0.0"
     },
+    {
+      "name":"camptocamp/systemd",
+      "version_requirement":">=0.4.0 <1.0.0"
+    },
     {
       "name":"puppetlabs/stdlib",
       "version_requirement":">= 4.6.0 <5.0.0"