Move any useful wrappers around the generated service-catalog clientset into its own package, e.g the entire traverse package, retrieval functions and actions like sync.
Renamed some of the traversal functions for clarity, e.g. InstanceToBindings -> RetrieveBindingsByInstance.
Okay, it's more trouble than it's worth to refactor this in discrete pull requests. Closing this and I'll send a bigger one with each step in a separate commit.
Step 1 of #92.