Remove DL0 specific code from ipa_kra_install in ipaserver/install
    
    Replica files are DL0 specific therefore all the code that is related to
    replica files have been removed An additional check for the new minimal
    domain level has been added. The use of extra args results in an error as
    this was only needed for the replica file.
    
    See: https://pagure.io/freeipa/issue/7689
    Signed-off-by: Thomas Woerner <twoerner@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>