There are multiple entries in the users table with the same email
address. This is because in the past users were able to register
multiple times if the email was not verified. This is no longer
the case. If a user tries to register with an unverified email
already in the DB, we send a verification email instead of
creating another entry. However, since these old entries in the
table with duplicate emails were never cleaned up, the email
reminder chore will send out email verification reminders to them.
A single person will get one separate email per entry in the DB
with their email and where status = 0.
Since the multiple entries with the same email problem was solved
a while ago, just add a constraint to GetUnverifiedNeedingReminder
to only select users created after a cutoff. Once the DB is
migrated to remove the duplicate emails, we can remove the cutoff.
github issue: https://github.com/storj/storj/issues/4853
Change-Id: I07d77d43109bcacc8909df61d4fb49165a99527c
5cfa7ca460