Activate sentry for journal clients

Journal client are actually code that runs. Like everything else, they should report eventual uncaught errors to sentry.

Remaining journal clients to cover:

• infra/puppet/puppet-swh-site!433: counter
• infra/puppet/puppet-swh-site!435: indexer
• infra/puppet/puppet-swh-site!436: scheduler
• infra/puppet/puppet-swh-site!437: search

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Migrated from T3664 (view on Phabricator)

added Monitoring System administration priority:Normal labels

added state:wip label

changed the description

marked the checklist item infra/puppet/puppet-swh-site!436: scheduler as completed

marked the checklist item infra/puppet/puppet-swh-site!437: search as completed

Deployed.

removed state:wip label

closed