Project: mesos
Issue MESOS-4821: Introduce a port field in `ImageManifest` in order to set exposed ports for a container.
Networking isolators such as `network/cni` need to learn about ports that a container wishes to be exposed to the outside world. This can be achieved by adding a field to the `ImageManifest` protobuf and allowing the `ImageProvisioner` to set these fields to inform the isolator of the ports that the container wishes to be exposed.
Story points: 1