update nginx template for TLS passthrough (nginx#2166)

Update nginx template for TLS passthrough

Problem: nginx configuration templates didn't support TLS passthrough

Solution: I added a template setup fro stream servers

Author: sarthyparty

internal/mode/static/nginx/config/servers_template.go

@@ -35,6 +35,7 @@ server {
           {{- if $.IPFamily.IPv6 }}
     listen [::]:{{ $s.Listen }} ssl;
           {{- end }}
+
     ssl_certificate {{ $s.SSL.Certificate }};
     ssl_certificate_key {{ $s.SSL.CertificateKey }};
 

internal/mode/static/state/dataplane/configuration.go

@@ -30,7 +30,7 @@ const (
 func BuildConfiguration(
 	ctx context.Context,
 	g *graph.Graph,
-	resolver resolver.ServiceResolver,
+	serviceResolver resolver.ServiceResolver,
 	generator policies.ConfigGenerator,
 	configVersion int,
 ) Configuration {
@@ -43,7 +43,7 @@ func BuildConfiguration(
 	}
 
 	baseHTTPConfig := buildBaseHTTPConfig(g)
-	upstreams := buildUpstreams(ctx, g.Gateway.Listeners, resolver, baseHTTPConfig.IPFamily)
+	upstreams := buildUpstreams(ctx, g.Gateway.Listeners, serviceResolver, baseHTTPConfig.IPFamily)
 	httpServers, sslServers := buildServers(g, generator)
 	backendGroups := buildBackendGroups(append(httpServers, sslServers...))
 	keyPairs := buildSSLKeyPairs(g.ReferencedSecrets, g.Gateway.Listeners)