Remove dependency on BF-CBC existance from test_ncp

Remove dependency on BF-CBC existance from test_ncp

The test_check_ncp_ciphers_list test assumed that BF-CBC is always
available, which is no longer the case with OpenSSL 3.0. Rewrite the
test to not rely on BF-CBC to be available.

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Max Fillinger <maximilian.fillinger@foxcrypto.com>
Message-Id: <20211019183127.614175-14-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23003.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>