Revert "templates/gateway: use internal listener..."

This reverts commit 550581b.

Using the internal listener with 2 connection managers is tricky, as the
request needs to be 'upgraded' again to an HTTP CONNECT request, which
is only possible with http2 in envoy.

templates/gateway.yml

@@ -22,12 +22,8 @@ objects:
           pipe:
             path: /sockets/admin.socket
 
-      bootstrap_extensions:
-      - name: envoy.bootstrap.internal_listener
-        typed_config:
-          "@type": type.googleapis.com/envoy.extensions.bootstrap.internal_listener.v3.InternalListener
-
       static_resources:
+
         ### Clusters ###
         clusters:
         # This backend is used to send metrics and probe requests to the admin endpoint.
@@ -44,18 +40,6 @@ objects:
                     pipe:
                       path: /sockets/admin.socket
 
-        - name: api-listener
-          connect_timeout: 2s
-          type: STRICT_DNS
-          load_assignment:
-            cluster_name: api-listener
-            endpoints:
-            - lb_endpoints:
-              - endpoint:
-                  address:
-                    envoy_internal_address:
-                      server_listener_name: api-listener
-
         - name: ext_fedora_auth
           connect_timeout: 2s
           type: STRICT_DNS
@@ -119,8 +103,11 @@ objects:
                   typed_config:
                     "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
 
-        - name: api-listener
-          internal_listener: {}
+        - name: ingress
+          address:
+            socket_address:
+              address: 0.0.0.0
+              port_value: 10000
           filter_chains:
             filters:
             - name: envoy.filters.network.http_connection_manager
@@ -131,9 +118,9 @@ objects:
                   typed_config:
                     "@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
                     path: /dev/stdout
-                stat_prefix: api-listener
+                stat_prefix: ingress
                 route_config:
-                  name: api-listener
+                  name: ingress
                   virtual_hosts:
                   - name: api
                     domains:
@@ -147,7 +134,10 @@ objects:
                         prefix: /api/image-builder
                       route:
                         cluster: image-builder
+                        auto_host_rewrite: true
                         timeout: 30s
+
+
                 http_filters:
                 # Remove any identity headers cheeky clients might try to add
                 - name: envoy.filters.http.header_mutation
@@ -176,51 +166,6 @@ objects:
                     "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
 
 
-        - name: ingress
-          address:
-            socket_address:
-              address: 0.0.0.0
-              port_value: 10000
-          filter_chains:
-            filters:
-            - name: envoy.filters.network.http_connection_manager
-              typed_config:
-                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
-                access_log:
-                - name: envoy.access_loggers.file
-                  typed_config:
-                    "@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
-                    path: /dev/stdout
-                stat_prefix: ingress
-                route_config:
-                  name: ingress
-                  virtual_hosts:
-                  - name: api
-                    domains:
-                    - "*"
-                    # Remove these headers in case someone adds them to the response
-                    response_headers_to_remove:
-                    - x-rh-identity
-                    - x-fedora-identity
-                    routes:
-                    - match:
-                        prefix: /api
-                      route:
-                        cluster: api-listener
-                        auto_host_rewrite: true
-                        timeout: 30s
-                    - match:
-                        prefix: /
-                      redirect:
-                        https_redirect: true
-                        host_redirect: osbuild.org
-                        path_redirect: /docs/service/fedora-console
-                http_filters:
-                - name: envoy.filters.http.router
-                  typed_config:
-                    "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
-
-
 - apiVersion: apps/v1
   kind: Deployment
   metadata: