*Description*: PGV picks up unused imports in `api/envoy/data/core/v2alpha/health_check_event.proto`.
Error message is:
```
INFO: From ProtoGenValidateCcGenerate external/envoy_api/envoy/data/core/v2alpha/health_check_event.pb.validate.h:
envoy/data/core/v2alpha/health_check_event.proto: warning: Import envoy/api/v2/core/base.proto but not used.
envoy/data/core/v2alpha/health_check_event.proto: warning: Import google/protobuf/wrappers.proto but not used.
envoy/data/core/v2alpha/health_check_event.proto: warning: Import google/protobuf/duration.proto but not used.
```
*Risk Level*: Low
*Testing*: `bazel test //test/...` and running on local instances
*Docs Changes*: none required
*Release Notes*: none required
Signed-off-by: Michael Payne <michael@sooper.org>
Mirrored from https://github.com/envoyproxy/envoy @ c951e6088a5e1214c864448b0ccfd104bf2131ee
This PR adds timestamp field to the HealthCheckEvent message to allow
having it rendered inside the JSON serialized log of a health check
event.
Signed-off-by: Dhi Aurrahman <dio@tetrate.io>
Mirrored from https://github.com/envoyproxy/envoy @ 8d0680feb074999c18998930b7f5f261f8f4a7a0