[WIP] Cleaning up cb_tier_add method. Need to add tests. (transferred from ManageIQ/manageiq@ab1195eca48da1294e8f5f84e2e1e330374924e2)
[WIP] Cleaning up cb_tier_add method. Need to add tests.
(transferred from ManageIQ/manageiq@ab1195eca48da1294e8f5f84e2e1e330374924e2)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic