However, there is also a template_defaults section in the environment file that allows you to override default values in _any_ template in the tree. (Any explicitly-passed values will in turn override these defaults.) TripleO makes extensive use of this mechanism to keep parameter values for child templates away from the main stack's parameters section.
However, there is also a template_defaults section in the environment file that allows you to override default values in _any_ template in the tree. (Any explicitly-passed values will in turn override these defaults.) TripleO makes extensive use of this mechanism to keep parameter values for child templates away from the main stack's parameters section.section. However, I don't know that Horizon has support for environment files so you may have to do this via the command line.