When a service is imported from a service csar the metadata in the 'General' page could potentially be populated from the contents of the csar.

This story is to read the csar, extract the metadata, model, subsitution mapping and use those values to populate the fields in the 'General' page.

It should not be assumed that all the data is available in the csar. Where any piece of data is not present the corresponding field shall function as today