Ensure clean Ruby/Bundler environment when executing api-umbrella.
Ensure clean Ruby/Bundler environment when executing api-umbrella.

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