Add configuration for CoreDNS and update host variables for lab environment

terraform/modules/apps/nginx-reverse-proxy/config.tf

@@ -27,6 +27,7 @@ locals {
       http_port  = v.http_port
       https_port = v.https_port
       upstream   = v.upstream
+      resolver   = v.resolver
       tls        = v.tls
       fqdn       = join(" ", v.fqdn)
       auth       = length([for l in v.locations : true if l.private]) > 0
@@ -35,6 +36,7 @@ locals {
         headers  = merge(l.headers, coalesce(v.default_headers, local.default_headers))
         private  = l.private
         upstream = l.upstream
+        resolver = l.resolver
         rewrite  = l.rewrite
       }]
       custom_snippet = v.custom_snippet