PRCI: extend timeouts
    
    Some tests have been identified as frequently failing on timeouts. While
    we are investigating PRCI potential issues, increase the timeouts to
    make PRCI usable. The rule is to add 30min if the test involves CA/KRA
    installation or 20min otherwise for the most problematic tests.
    
    external_ca: from 1h to 1h20
    
    Reviewed-By: Tibor Dudlak <tdudlak@redhat.com>