bug: cannot declare which profile to use to create session tokens

[reconbot]

I have AWS_PROFILE=default-session set

aws-sudo --token 123456 -p default
AccessDenied: Cannot call GetSessionToken with session credentials

[southpolesteve]

Saving here for myself later: http://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/loading-node-credentials-shared.html