fix: add labels necessary for autoscaling

Description

1. Fix the configuration for the AWS autoscaler so that it works.
2. Update the policy for the S3 buckets to fix the error:

botocore.exceptions.ClientError: An error occurred (403) when calling the HeadObject operation: Forbidden

Supporting information

• https://tasks.opencraft.com/browse/BB-7106

Testing instructions

Steps to test the changes:

1. On the grove-stage-aws cluster verify that new nodes have been created with ./kubectl get nodes. There will be 5 nodes instead of the default 3.
2. Create an account and login to https://nutmegtwo.staging.dev.grove-aws.opencraft.hosting
   • Enroll in an existing course
   • Open the enrolled course
   • The course should open without any errors.

Checklist

If any of the items below is not applicable, do not remove them, but put a check in it.

• All providers include the new feature/change
• All affected providers can provision new clusters
• Unit tests are added/updated
• Documentation is added/updated
• The TOOLS_CONTAINER_IMAGE_VERSION in ci_vars.yml is updated
• The grove-template repository is updated