sleeper-service.erb

#!/bin/sh
# managed by Class['common::sleeperservice']
#
# sleep some time before running cron jobs
sleep <%= delay %>m

sleeperservice.pp

class common::sleeperservice {
  $delay = fqdn_rand(120)

  # suffix() is in https://github.com/puppetlabs/puppetlabs-stdlib/commit/88a93ac6cdf38045e1cf29325a70e5e4143016b3
  $files = regsubst(prefix(['daily', 'weekly', 'monthly'], '/etc/cron.'), '$', '/000-sleeper-service')
  
  file{$files:
    ensure  => present,
    content => template('common/sleeper-service.erb'),
    mode    => '0755',
  }
}