easy-rsa v3 is now a single script. It expects a 'vars'
configuration file which path can be set using easy-rsa
options, environment variables or just looking in the
current directory.
The default usage would be:
# cd /etc/easy-rsa
# easy-rsa COMMAND [command-options]
Following upstream changes, /etc/easy-rsa/pki replaces
/etc/easy-rsa/keys directory.
The default /etc/easy-rsa/pki dir is marked to be kept during
upgrade (WARN: priv keys are saved in the system backup)
/etc/easy-rsa/openssl.1.0.cnf is now marked as config file while
index and serial got removed.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>