tests/krb5: Include kdc_options in kdc_exchange_dict

tests/krb5: Include kdc_options in kdc_exchange_dict

Make kdc_options an element of kdc_exchange_dict instead of a parameter
to _generic_kdc_exchange(). This allows testing code to adjust the reply
checking based on the options that were specified in the request.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14817
(cherry picked from commit 8fe9589da2d8fe6f5c47770c618ebabe028f6a95)