Indagate on openvpn warning message

[morpheusthewhite]

After last update (to version 2.5.0) openvpn generates a warning message

OpenVPN now uses a netlink interface for network configuration. The systemd
   units start the process with a dedicated unprivileged user 'openvpn', with
   extra capabilities(7). The configuration should no longer drop privileges,
   so remove 'user' and 'group' directives.
   Scripts that require elevated privileges may need a workaround

Indagate on the eventual needed modifications.