Add spec for chargeback rate for actions
Add spec for chargeback rate for actions

spec for action
- renders edit form
- removing and adding tiers thru button "add" and "remove"
- save chargeback rate form when user is changing tiers(adding, removing and changing values)
(transferred from ManageIQ/manageiq@f7463bbcd5fc26da45806118dfb3eab204cbcefc)

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