Repo checks: Automatically set permissions on EPICS repos

[iangillingham-stfc]

As a: [developer/user/instrument/project requirement] I would like the repo_checks build to make sure every repository in EPICS has permissions automatically set for:

• ICP-read as a reader
• ICP-write as a writer
• ICP-writeandmerge as a maintainer

This is a follow-on to ticket #8480: check for permissions on EPICS repos
and will probably involve some augmentation to do_check_permissions_epics_repos.py, which presently simply reports repos which have incorrect settings. Currently there are 268 EPICS repos requiring permissions modifications.

Make the repo checks automatically update the repo permissions

Acceptance Criteria

• EPICS Repos (submodules) all have the permissions set correctly after running

How to Test

• Verify that repo permissions updater would correctly update repos that required updating