Created tests for IAM auth.
Created tests for IAM auth.

william-richard/moto,william-richard/moto,william-richard/moto,whummer/moto,whummer/moto,whummer/moto,whummer/moto,spulec/moto,william-richard/moto,whummer/moto,william-richard/moto,spulec/moto,spulec/moto,spulec/moto,spulec/moto,spulec/moto,whummer/moto,william-richard/moto