For situations where you want the Vault agent to handle one or more templates but do not require the acquired credentials elsewhere.
Modify the logic in SyncServer so that if there are no sinks, ignore any new credentials. Since SyncServer is responsible for shutting down the agent, make sure it still properly shuts down in this new situation.
Solves #7988
* Fix formatting of the Vault Agent docs
* Fix up the param definitions with <code> rather than <tt>
* Use <code> only where there is a link embedded, otherwise ticks
* rename UseAutoAuthForce to ForceAutoAuth, because I think it reads better
* Document 'ForceAuthAuthToken' option for Agent Cache
* Update website/pages/docs/agent/caching/index.mdx
Co-Authored-By: Jim Kalafut <jkalafut@hashicorp.com>
* Add additional tests around use_auto_auth=force and add documentation
* remove note, it's no longer correct
Co-authored-by: Jim Kalafut <jim@kalafut.net>
