Yes, going back to heat_template_version: 2013-05-23 and doing a straight replace of list_join to Fn::Join should work with older heats; I'll propose the change.
As an aside, how soon can tripleo use a new feature from heat?
Yes, going back to heat_template_ version: 2013-05-23 and doing a straight replace of list_join to Fn::Join should work with older heats; I'll propose the change.
As an aside, how soon can tripleo use a new feature from heat?