using https://forge.softwareheritage.org/source/swh-storage/browse/master/swh/storage/migrate_extrinsic_metadata.py
Migrated from T3185 (view on Phabricator)
added Storage manager System administration priority:Normal labels
changed title from Migrate extrinsic metadata to Migrate extrinsic metadata from 'revision' to 'raw_extrinsic_metadata' tables
added state:duplicate label
closed