CVE-2022-37966 s4:kdc: Set supported enctypes in KDC entry

CVE-2022-37966 s4:kdc: Set supported enctypes in KDC entry

This allows us to return the supported enctypes to the client as
PA-SUPPORTED-ENCTYPES padata.

NOTE: THIS COMMIT WON'T COMPILE/WORK ON ITS OWN!

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit cb382f7cddebabde3dac2b4bdb50d5b864463abf)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
[jsutton@samba.org Adapted to Samba 4.15; removed FAST-supported bit for
 KDC]
Reviewed-by: Stefan Metzmacher <metze@samba.org>