Roles for admin user can be defined in config

Using the auth.tempest_admin_roles variable you can assign
any extra roles for admin in tempest

Fixes-Bug: PRODX-56646
Change-Id: I4f2392c8ab3d690d6bfd9bfa80769d67e60a1433
(cherry picked from commit 26227b6040e766c46039cb5aba1d8be325d24761)
3 files changed