Title: Set mutiple Set-Cookie header within a Lua EnvoyFilter as reponse
istio verision: v1.2.2

I tried to concat with , like

headers["set-cookie"] = "test=123; Path=/, foo=bar; Path=/" 

This will be send but not unfolded.

Also tied using a table (like Nginx does it) no luck -> got table, sting expected.