Add authority field in envoy grpc message to override the default host name as cluster name.
Risk Level: Low
Testing:
Docs Changes:
Release Notes:
Fix#12116
Signed-off-by: Yuchen Dai <silentdai@gmail.com>
Mirrored from https://github.com/envoyproxy/envoy @ 29b49276db0812b566d143a79996848819248428