With the introduction of ClusterManagementServiceBuilder, an inadvertent confusing configuration manner was introduced.
In the Builder pattern, the setter methods are optional and required fields are either added on the constructor or build method.
The current ClusterManangementServiceBuilder introduced the notion of required optionality. Where you had to pick at least one of the setters.
To fix this, I removed `setConnectionConfig` which is really only required for the Transport and removed that option.