Onionoo should output full tor-exit-address

This ticket is to improve onionoo to output the full list of tor exit address.

Today the only reliable source for IP addresses being used by Tor Exit Relay is https://check.torproject.org/exit-addresses .

At Tor2web we are using onionoo but we need to switch to exit-addresses https://github.com/globaleaks/Tor2web-3.0/issues/125 .

The best solution would be if onionoo would also expose Tor Exit Relay IP addresses.