* Since we want to use the Agent listener for #6384, move listener config
from top-level 'cache' block to new top-level 'listeners' block.
* Make agent config allow cache and listener blocks without auto-auth
configured.
* 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://
This allows it to authenticate once, then exit once all sinks have
reported success. Useful for things like an init container vs. a
sidecard container.
Also adds command-level testing of it.
ncabatoff