Add a correlation GRPC server middleware
This will extract the correlation_id from an incoming GRPC request and configure the thread to use it.
Required for https://gitlab.com/gitlab-org/labkit-ruby/issues/5
Edited by Andrew Newdigate
This will extract the correlation_id from an incoming GRPC request and configure the thread to use it.
Required for https://gitlab.com/gitlab-org/labkit-ruby/issues/5