What does this MR do?
Fixes permission of scripts bundled into generated package.
Why was this MR needed?
See gitlab-org/gitlab-ci-multi-runner#1997 for a reference
Are there points in the code the reviewer needs to double check?
Does this MR meet the acceptance criteria?
Added for this feature/bug
All builds are passing
Branch has no merge conflicts with
master(if you do - rebase it please)
What are the relevant issue numbers?