"entitySource" configuration setting is the default way of defining what wikis provides which entity types.
Legacy "repositories" setting is going to be removed after all its uses are adjusted to use a dedicated setting.
[x] Use string db name for test commons https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/605645
[] Define entity source config for Wikidata: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/569258
[] Define entity source config fo Wikidata clients: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/569259
[] Define entity source config for Commons: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/569260
[] Remove the legacy Wikibase config for production wikis: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/569261