add script to backup csv

[nammn]

Summary

This pull request introduces a new script and corresponding Evergreen tasks to backup digest-pinned images from a ClusterServiceVersion (CSV) YAML file to Quay.io. The changes include adding a Python script to perform the backup process, new Evergreen tasks to execute the script, and a new build variant for these tasks.

New Evergreen tasks and build variant:

• .evergreen.yml: Added three new tasks (backup_csv_images_dry_run, backup_csv_images_limit_3, and backup_csv_images_all) to run the backup script with different options, and created a new build variant (backup_csv_images) to group these tasks under the "Backup CSV Images" workflow. [1] [2]

New Python script for image backup:

• scripts/dev/release/backup_csv_images.py: Added a comprehensive Python script to parse a CSV file, extract digest-pinned images, and back them up to Quay.io using a new tag format (_openshift_<mck_version>). The script supports dry-run mode, logging, and limiting the number of images to back up.

Proof of Work

https://parsley.mongodb.com/evergreen/mongodb_kubernetes_backup_csv_images_backup_csv_images_all_patch_5710105f0347aed651ce63e6b37f06051caa634a_686e4ee749d2610007d96aaa_25_07_09_11_13_48/0/task?bookmarks=0,11182&shareLine=3143

Checklist

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[lsierant]

let's not add [DRY RUN] if it's not a dry run

[nammn]

if its not a dry_run we are running this

 else f"Executing: {' '.join(cmd)}")

or do you mean we shouldn't use the ternary operator?

[lsierant]

Awesome work!