/usr/share/tripleo-image-elements/os-apply-config/install.d/11-create-template-root is in python-tripleo-image-elements 0.7.1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #!/bin/bash
set -eux
TEMPLATE_ROOT=$(os-apply-config --print-templates)
mkdir -p $TEMPLATE_ROOT
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