specs - JS add_flash specs
specs - JS add_flash specs

testing it can create one or multiple flash messages and that it can ensure id-uniqueness
(transferred from ManageIQ/manageiq@59f72f152374c2bec8e8c644e6cac9dbcda93c08)

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