CVE-2022-2031 tests/krb5: Allow requesting a TGT to a different sname and realm

CVE-2022-2031 tests/krb5: Allow requesting a TGT to a different sname and realm

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflict due to lacking rc4_support parameter]

[jsutton@samba.org Fixed conflicts due to lacking client_name_type and
 expected_cname parameters]