We will be needing an infrequent chore to check which nodes are in the
reverify queue and synchronize that set with the 'contained' field in
the nodes db, since it is easily possible for them to get out of sync.
(We can't require that the reverification queue table be in the same
database as the nodes table, so maintaining consistency with SQL
transactions is out. Plus, even if they were in the same database, using
such SQL transactions to maintain consistency would be slow and
unwieldy.)
This commit adds a method to the class representing the reverify queue
in the database, allowing us to get the list of every node that has at
least one record in the reverification queue.
Refs: https://github.com/storj/storj/issues/5431
Change-Id: Idce2633b3d63f2645170365e5cdeb2ea749fa9cb
7652a598d8