[SSH keys] Revert temporary "all records" change to expiration notification emails
Problem to solve
In %13.12 we modified SSH key expiration notification emails to consider all SSH keys, not just those expiring "today". This will cause one large batch of emails to be sent, but is no longer necessary after that batch is sent.
Proposal
After a reasonable period of time to allow for the email batch to be sent, the prior changes should be reverted:
- The worker should only consider keys expiring "today".
- The database indexes should be removed.
index_keys_on_expires_at_and_expiry_notification_undelivered
idx_keys_expires_at_and_before_expiry_notification_undelivered
Edited by Max Woolf