'Registers declared addon\'s'

def _add_addon_views(self):

    for addon in self._addon_managers:
        addon_class = dynamic_class_import(addon)
        if addon_class:
            addon_class = addon_class(self)
            try:
                addon_class.pre_process()
                addon_class.register_views()
                addon_class.post_process()
                self.addon_managers[addon] = addon_class
                log.info(LOGMSG_INF_FAB_ADDON_ADDED.format(str(addon)))
            except Exception as e:
                log.exception(e)
                log.error(LOGMSG_ERR_FAB_ADDON_PROCESS.format(addon, e))
