extensions: support disabling the grpc http1 reverse bridge filter per-route (#8645)

Signed-off-by: Manuel Jurado <manuel.jurado@socialpoint.es>

Mirrored from https://github.com/envoyproxy/envoy @ e0e94c5a52ee692468fd2b802a0430dd5b35854f

envoy/config/filter/http/grpc_http1_reverse_bridge/v2alpha1/config.proto

@@ -24,3 +24,10 @@ message FilterConfig {
   // simple binary encoded protobuf.
   bool withhold_grpc_frames = 2;
 }
+
+// gRPC reverse bridge filter configuration per virtualhost/route/weighted-cluster level.
+message FilterConfigPerRoute {
+  // If true, disables gRPC reverse bridge filter for this particular vhost or route.
+  // If disabled is specified in multiple per-filter-configs, the most specific one will be used.
+  bool disabled = 1;
+}