
we have used domain scope arguments --project-domain, --user-domain and --group-domain in identity commands, for example, role add v3, to prevent resources conflict from same resource name existence. To keep with the style of identity commands, it's better to rename --domain to --project-domain. Closes-Bug: #1468988 Change-Id: Ic6ccb895cf9be4a3d5f0001525e3b80cd340da8b