Remove tests which install KRA on replica w/o KRA on master
    
    The KRA installation code explicity quits if trying to
    install a KRA during a replica installation if there is not
    already a KRA in the topology.
    
    A KRA can be added afterward.
    
    https://pagure.io/freeipa/issue/7651
    
    Reviewed-By: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>