[nginx-ingress] Log global_request_id variable
[nginx-ingress] Log global_request_id variable

The value can be set in each ingress where required, otherwise it will print a hypen '-'
It is currently set in various openstack services, and allows us to correlated more easily the request
between the nginx and the upstream service

sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts