Create reasonable OpenVPN defaults from provider's eip-service.json
eip-service.json includes server-side necessary config (IP, port, etc) Some items include multiple options (i.e. ports) Some config options needed by / useful for openvpn are not defined by provider (i.e. timeout,retries, etc)
Right now, VPNProfile and OpenVPN management code does not include any option "cycling" (like trying a different port), so we just pick the best.
(from redmine: created on 2013-04-02, closed on 2013-04-02)