Fix undefined variable now that we fixed the parent test class.
Fix undefined variable now that we fixed the parent test class.

Since we fixed the API tests to not inherit from Capybara tests, the
"body" method is undefined (as it should be).

NREL/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,NREL/api-umbrella