rsyslog.conf: first load default modules, then third-party config
    
    When we installed file /etc/rsyslog.d/03-ratelimits.conf:
    
        $IMJournalStateFile imjournal.state
        $IMJournalPersistStateInterval 1000
        $IMJournalRatelimitInterval 1
        $IMJournalRatelimitBurst 10000
    
    rsyslog failed:
    
        invalid or yet-unknown config file command 'IMJournalStateFile' - have you forgotten to load a module? [v8.2010.0 try https://www.rsyslog.com/e/3003 ]
        invalid or yet-unknown config file command 'IMJournalPersistStateInterval' - have you forgotten to load a module? [v8.2010.0 try https://www.rsyslog.com/e/3003 ]
        invalid or yet-unknown config file command 'IMJournalRatelimitInterval' - have you forgotten to load a module? [v8.2010.0 try https://www.rsyslog.com/e/3003 ]
        invalid or yet-unknown config file command 'IMJournalRatelimitBurst' - have you forgotten to load a module? [v8.2010.0 try https://www.rsyslog.com/e/3003 ]
    
    That's because imjournal was loaded later than that config file.  If
    module was explicitly loaded via '$ModLoad imjournal' in our third-party
    file, we got a different error:
    
        module 'imjournal' already in this config, cannot be added  [v8.2010.0 try https://www.rsyslog.com/e/2221 ]
    
    When the config file is reordered like this, no errors are shown.
    
    Resolves: rhbz#1985202