The jinja2 rendering is working properly now. The issue is that heat is not finding the jinja2 files that get rendered in swift in the working THT directory. I don't know what the intended workflow is here: whether to render the templates and have heat pull the rendered files from swift or mistral downloading them to the working THT dir.
Workaround:
move into your active THT dir and run: swift download overcloud
The jinja2 rendering is working properly now. The issue is that heat is not finding the jinja2 files that get rendered in swift in the working THT directory. I don't know what the intended workflow is here: whether to render the templates and have heat pull the rendered files from swift or mistral downloading them to the working THT dir.
Workaround:
move into your active THT dir and run: swift download overcloud