Fix error when nothing is select in rate assigments (transferred from ManageIQ/manageiq@6d4d9d8b430a9eb4040b4e08369b706e257f7c09)
Fix error when nothing is select in rate assigments
(transferred from ManageIQ/manageiq@6d4d9d8b430a9eb4040b4e08369b706e257f7c09)

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