OST does not recognise Lightning Component Inheritance

[James Melville]

• Create a lighting component annotated extensible="true". Define a public attribute on this component
• Extend the base component.
• Use the extension component in another component, and supply a value to the attribute from the base component. See that any references to the attributes from the base component are flagged as "Attribute X is not allowed here".

[Scott Wells]

Issue tracker grooming. If this is still an issue, please feel free to reopen, ideally with a concrete reproduction scenario.