FIPS setup: fix typo filtering camellia encryption
    
    The config file /var/kerberos/krb5kdc/kdc.conf is customized
    during IPA server installation with a list of supported
    encryption types.
    In FIPS mode, camellia encryption is not supported and should
    be filtered out. Because of a typo in the filtering method,
    the camellia encryptions are appended while they should not.
    
    Fix the typo (camelia vs camellia) in order to filter properly.
    
    Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>