Add s3 e2e CLI test

[giovannt0]

In the future we'd deprecate e2e files in favor of e2e_cli ones, since they capture a larger scope of our testing. This means that all tests present in e2e files should be adapted and migrated to the cli one (granted that the corresponding operations are available through the CLI)

[ramo-j]

Unassigning after OOB discussion. Pending decision on e2e testing direction.