/usr/share/tripleo-image-elements/salt-minion/pre-install.d/10-salt-minion 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 7 | #!/bin/bash
# Add the salt PPA
set -e
set -o xtrace
add-apt-repository -y ppa:saltstack/salt
|