Backups to s3

[lukesmurray]

We should be able to have

• [x] latest backup to s3
• [x] ability to specify s3 bucket to terraform to transfer between instances

Later we could have

• [x] versioned backup to s3 or last 5 days/logins backup to s3

[lukesmurray]

Implemented s3 bucket name so pre existing bucket can be used.

We have a versioned life cycle rule so we save 90 days of data currently. we can change this if it gets expensive.

lifecycle_rule {
    enabled = true

    noncurrent_version_transition {
      days          = 30
      storage_class = "STANDARD_IA"
    }

    noncurrent_version_transition {
      days          = 60
      storage_class = "GLACIER"
    }

    noncurrent_version_expiration {
      days = 90
    }
  }