Subscribe swh-search's journal client to indexed extrinsic metadata
Subscribe swh-search's journal client to indexed extrinsic metadata

This is expected since swh-search v0.16.0, in order to search on GitHub
metadata for example.

SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site