Take advantage of the ca/kra code cleanup in replica installation
    
    The recent cleanup of ca/kra installation code can be used to
    greatly reduce the number of differences between DL0 and DL1
    in replica installation.
    
    This change also allows to move Custodia instance creation after
    Kerberos and httpd instances installation.
    
    https://fedorahosted.org/freeipa/ticket/6392
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>
    Reviewed-By: Jan Cholasta <jcholast@redhat.com>