As a continuation of the work done in https://issues.redhat.com/browse/OSASINFRA-3753, there is one suggestion during the review of https://gitlab.cee.redhat.com/eng/openstack/rhos-qe-jenkins/-/merge_requests/156 coming from itbrown@redhat.com: "we can have a script file and an env file and pass it to the undercloud which will read the env vars from the file."

That will differ with the curren approach, which is storing the script directy on the groovy stage. This task is for evaluation if this kind of refactoring is interesting and will help with maintenance and support of the testing.