Update openvpn connection script for vpn servers to update the table instead of memcached

[proditis]

Update vpn up/down script to update mysql table player_last instead of memcached ovpn:id key.
This should include updates of on_vpn=NOW(), vpn_local_address=INET_ATON($local_IP), vpn_remote_address=INET_ATON($remote_ip) WHERE id=$cn

The script should keep on checking if the ovpn:id key is set to deny secondary logins, however the key will be populated by mysql triggers instead of nc

[proditis]

Used this to generate list of libs that we are going to need on the OpenVPN chroot (/var/openvpn/) https://gist.github.com/proditis/5d27b6be16e16796ae185e4bdc711f5b

run like chroot-liblist.sh /usr/local/bin/mysql