SubobjectDataSubsystem functions do not show up in blueprint editor.

Licensee was not able to access SubObjectDataSubsystem functions from their blueprint editor, as the functions (such as "GatherSubobjectDataFromInstance") did not show up in the right-click menu and was not otherwise accessible within blueprints.
They also referenced an older UDN case where this was possible.

1. Open up blank project.
2. Create blueprint function library (BP).
3. Add a "SubobjectDataSubsystem" node.
4. Try to add any functions from the SubobjectDataSubsystem that was defined in its .h file that should be blueprint callable.

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