Make registry more consumable

[jmrodri]

We need a way for a consumer to be able to create their own registry and pass that information into the library so that the library uses it instead of its own. Please refer to the consumable_registry branch of the ansible-service-broker repo

• create registry config structs
• broker should use config package to create registry config structs
• build registry from registry structs
• pass configured registry into App.
• Remove config repo and move it to package in broker repo

[jmrodri]

https://github.com/openshift/ansible-service-broker/tree/consumable_registry

[jmrodri]

This is already done, we can now vendor the broker (including bundle-lib).