title: Puppet: cron schedule - "is not a valid hour" error
body: <p>I need to schedule a cron job for daily running every 30 mins from 0 to 6 and from 13 to 23. I tried this code:</p>
  
  <pre><code>cron { "MyJob":
      ensure  =&gt; present,
      command =&gt; "my-cron-command",
      user    =&gt; 'root',
      hour    =&gt; "0-6,13-23",
      minute  =&gt; '*/30',
      environment =&gt; "MY_ENV"
  }
  </code></pre>
  
  <p>This fails with</p>
  
  <pre><code>0-6,13-23 is not a valid hour
  </code></pre>
  
  <p>What <code>hour</code> format should I use? Do I need any other changes in cron clause?</p>