nasa-veda: add bucket permissions to terraform added outside terraform

[consideRatio]

@freitagb I detected a change in nasa-veda's cloud infra that wasn't reflected in our terraform configuration.

When re-generating credentials (#3723), I had to either delete what was added outside the terraform config in the terraform managed resource (bucket permissions), or I had to add it. I opted to add it to the terraform configuration, and while doing that I also added the same permission for the staging environment.

The change applied outside our terraform configuration was to make an IAM Policy allowing bucket access apply to the bucket sdap-dev-zarr.

@freitagb could you confirm its OK to persist this change to the terraform config for use in both staging/prod?

[freitagb]

Thanks @consideRatio. I have been experimenting with access permissions and was looking to push the PR once everything was working as expected. I appreciate you adding it to terraform and agree that we can continue with the push to staging/prod. Should changes need to be made i'll submit a PR with those changes.

[consideRatio]

Thank you @freitagb and @yuvipanda!