[OpenStack-I18n] [String freeze exception] Horizon https://review.openstack.org/#/c/371907/

Hi i18n team, I would like to request a string freeze exception for horizon: https://review.openstack.org/#/c/371907/ which fixes https://bugs.launchpad.net/horizon/+bug/1624197 . It is small enough and can be accepted. Can we move this forward? This patch allows translators to control the word order in delete confirm forms. Currently "You have selected: " and selected items are concatenated and in some language the selected items need to be placed first. Thanks, Akihiro