fixes info_controller_spec for rails 3

Change-Id: Ica1d31047022e250e7e420b38afa21b3ea79e523
Reviewed-on: https://gerrit.instructure.com/29901
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Derek DeVries <ddevries@instructure.com>
Product-Review: Landon Wilkins <lwilkins@instructure.com>
QA-Review: Landon Wilkins <lwilkins@instructure.com>