Add 2nd url to public_info for redundancy

Public_info will now try http://whoami.rackops.org/api first and if this fails it will use http://dazzlepod.com/ip/me.json. There is a difference in the JSON returned for remote_ip from dazzlepod so logic added to deal with this. 
I would move to 3.2.0 as we are adding something totally new. @niven01