fix nagios sudo for check_journal

Related to T3705

site-modules/profile/manifests/icinga2/objects/agent_checks.pp

@@ -27,7 +27,7 @@ class profile::icinga2::objects::agent_checks {
         'journal_lag_crit' => 3600,
       },
       sudo => true,
-      sudo_user => 'journalbeat',
+      sudo_user => 'root',
     },
     'check_newest_file_age' => {
       arguments => {

[Phabricator Migration user]

Some references in the commit message have been migrated:

• T3705 is now swh/meta#3705 (closed)