Revert "config: removing deprecated bind_to_port (#5288)" (#5344)
Revert "config: removing deprecated bind_to_port (#5288)" (#5344)

This reverts commit 36db7761cc963a7790eb31eb7bccd7cfb248146c.

Signed-off-by: Piotr Sikora <piotrsikora@google.com>

Mirrored from https://github.com/envoyproxy/envoy @ 553c21b796f9dd7b3d1ae01cdfc4bebdd3b28338

lyft/envoy-api,lyft/envoy-api,lyft/envoy-api