swh-indexer: Fix configuration to add the tools configuration entry
Without this, the indexer fails on KeyError tools (which blocks further inquiry in swh-search).
I forgot to mention I encountered this when I replied [1]
It's not the same issue as mentioned there (and it's still not blocking for it). It's worth acknowledging there is an issue nonetheless.
It's blocking for swh-search within docker though.
Related to #2854
Test Plan
doco up -f docker-compose.yml -f docker-compose.search.yml up
Migrated from D4708 (view on Phabricator)