Fix glance_image_signed function to accept name arg

name argument is mandatory in salt states, this patch
updates glance_image_signed to accept name instead of image_name.

Change-Id: I34a489dfe7540cde40b4097079ad0fa4b21a4d1f
Related-Prod: PROD-26620
(cherry picked from commit 45b427b9266cfd65b527cdee75a5df9dfb05d3dc)
2 files changed