Fix tls-cert-profile broken on OpenSSL 1.1+

Fix tls-cert-profile broken on OpenSSL 1.1+

Commit bc36d9d569 removed the autoconf detection of various OpenSSL
functions. This overlooked HAVE_SSL_CTX_SET_SECURITY_LEVEL check in
tls_ctx_set_cert_profile. Replace this also with a version number
based check.

Tested with LibreSSL on OpenBSD 6.8, OpenSSL 1.1 and wolfSSL.

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20210623183728.2565286-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22584.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>