fixes genericfilescontroller spec test, which was failing due to xhr :post to the audit method requiring authentication
fixes genericfilescontroller spec test, which was failing due to xhr :post to the audit method requiring authentication

samvera/hyrax,ndlib/scholarsphere,ndlib/scholarsphere,zhang4952/scholarsphere,samvera/hyrax,samvera/hyrax,jeremyf/sufia,zhang4952/scholarsphere,samvera/hyrax,jeremyf/sufia,zhang4952/scholarsphere,zhang4952/scholarsphere,ndlib/scholarsphere