refactor validate_regions to supports_regions (transferred from ManageIQ/manageiq@1aaee76a92d245e40b54c806e94d545e24780c32)
refactor validate_regions to supports_regions
(transferred from ManageIQ/manageiq@1aaee76a92d245e40b54c806e94d545e24780c32)

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