Fix Softlayer driver and make sure all the code is up to date and works
with the latest version of the actual Softlayer deployment (v3).

Contributed by Kevin McDonald, part of LIBCLOUD-287.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1441655 13f79535-47bb-0310-9956-ffa450edef68