Simplify Zone list retrieval and limit to current region (transferred from ManageIQ/manageiq@944a9e9a22903620fef7fe198b59949f8f0ce1e6)
Simplify Zone list retrieval and limit to current region
(transferred from ManageIQ/manageiq@944a9e9a22903620fef7fe198b59949f8f0ce1e6)

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