metrics-db manual is out of date
https://gitweb.torproject.org/metrics-db.git/blob/HEAD:/doc/manual.pdf page 5: "Import the database schema from file db/tordir.sql [...]"
https://gitweb.torproject.org/metrics-db.git/tree/HEAD:/src/org/torproject/ernie/db
does not contain tordir.sql. Where can one find it? thanks