log HTTP req/resp headers created by metadata exchange filter in ALS (#17592)
log HTTP req/resp headers created by metadata exchange filter in ALS (#17592)

* log metadata exchange filter headers by default in ALS

Signed-off-by: Shriram Rajagopalan <785e0dd68b4a7eb354cdcc8c12d1b30f8a185e10@tetrate.io>

* go mod fix

Signed-off-by: Shriram Rajagopalan <785e0dd68b4a7eb354cdcc8c12d1b30f8a185e10@tetrate.io>

geeknoid/istio,smawson/istio,geeknoid/istio,smawson/istio,geeknoid/istio,istio/istio,istio/istio,smawson/istio,istio/istio,istio/istio,smawson/istio,smawson/istio,geeknoid/istio,geeknoid/istio,geeknoid/istio,smawson/istio,istio/istio