* vault-agent-cache: squashed 250+ commits
* Add proper token revocation validations to the tests
* Add more test cases
* Avoid leaking by not closing request/response bodies; add comments
* Fix revoke orphan use case; update tests
* Add CLI test for making request over unix socket
* agent/cache: remove namespace-related tests
* Strip-off the auto-auth token from the lookup response
* Output listener details along with configuration
* Add scheme to API address output
* leasecache: use IndexNameLease for prefix lease revocations
* Make CLI accept the fully qualified unix address
* export VAULT_AGENT_ADDR=unix://path/to/socket
* unix:/ to unix://
