BreadcrumbsMixin - add a no_magic option (defaults to false)
BreadcrumbsMixin - add a no_magic option (defaults to false)

providing :no_magic => true in breadcrumb definition will just pass on the breadcrumbs from the controller

the legacy controller magic is necessary for old code, but really problematic for any new code trying to render specific breadcrumbs,
so we need a way of switching it off

https://bugzilla.redhat.com/show_bug.cgi?id=1741203

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