Script for the OpenVPN track - Create CA, config file, copy to team serv...

I've added the script I've created for the OpenVPN track. That includes scripts for : 
 - Install OpenSSL
 - Create CA-Root certificate and signing CA
 - Create CA certificate (self-signed) for OpenVPN server
 - Push-to-client script to configure each team servers
 - Create a client certificate for one team or all at once
 - and more!