Adds some ways to get ssl information from a load balancer

Added some very basic stuff to make it easier to display ssl information for each load balancer.

We use this library at howaboute for our https://github.com/howaboutwe/knife-rackspace-load-balancer knife plugin. I have a fork out that uses this capabilities.

Also have you guys attempted to get rackspace to merge these changes in? This is all good stuff that should get merged upstream.

Best,
Baldur