Enable automated backups of EBS volumes on VEDA staging hub

[sgibson91]

Context

We will be moving forward on automated backups for AWS EBS volumes using the Data Lifecycle Manager option.

• Automatically create daily backups
• Retention period of 5 days
• Deploy and test on VEDA staging hub first

Task list

- [ ] Create an IAM role for DLM service in terraform
- [ ] Apply the target tag to existing EBS volumes for which automated backup has to be enabled.
- [ ] Set up a DLM lifecycle policy, that defines the time and interval of backup creation, retention period and a target tag for selection of EBS volumes for backing up, in terraform
- [ ] Set `Backup = true` on the existing EBS volume for staging
- [ ] Wait a day and see if a backup has been created
- [ ] Investigate how to restore from backups
- [ ] Document feature and how to restore from backup

Definition of Done

• [ ] The feature/service is technically complete
• [ ] Deployed to staging hub
• [ ] The feature/service been tested with one or more users (if applicable)
• [ ] The feature/service is well documented, and the documentation is accessible for the target user base