Update the openvpn sample configurations to use modern options in favor
of deprecated ones, suggest more sane default settings and add some
warnings.
* Add tls_crypt and ncp_disable to the sample configuration
* Replace nsCertType with remote_cert_tls in client sample configuration
* Comment out "option compress", compression should not be preferred
* Advise 2048-bit Diffie-Hellman parameters by default
* Add warnings about compression and use of Blowfish (BF-CBC)
Signed-off-by: Magnus Kroken <mkroken@gmail.com>
48a9d99a21