common/archive: Ensure backward compatibility with swh-indexer 1.x
idx_storage.origin_intrinsic_metadata_get
does not return the same
dict fields according to the swh-indexer version used.
As swh-indexer 2.0.0
is not yet deployed in production, we must ensure
backward compatibility with swh-indexer 1.x
or the Web API endpoint
/origin/metadata-search/
will break.
Migrated from D7971 (view on Phabricator)