* xds: use plain functions, add unit tests for control plane routes
* xds: add test for grpc routes
* xds: add test for pomerium http routes
* xds: add test for policy routes
* xds: use plain functions
* xds: test get all routeable domains
* xds: add build downstream tls context test
* more tests
* test for client cert
* more tests
* envoy: support autocert
* envoy: fallback to http host routing if sni fails to match
* update comment
* envoy: renew certs when necessary
* fix tests