Fix for integration tests replication layouts
    
    Domain level 0 doesn't allow to create replica file on CA-less master, testcases were skipped with Domain level 0
    
    [https://fedorahosted.org/freeipa/ticket/6134]
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>
    Reviewed-By: Petr Spacek <pspacek@redhat.com>