Add parameter to expand reports when retrieving checks

[hsyed]

The get requests contain a query param to expand the check. When a check has the consider status the reports need to be expanded to make decisions.

The signature of GetCheck will need to be changed it should probably be updated to take a request object. Will you accept a PR for this ?

[hsyed]

I missed GoCheckExpanded. This method loops over the reports and retrieves them in separate calls.