Project: mesos
Issue MESOS-5753: Command executor should use `mesos-containerizer launch` to launch user task.
Currently, command executor and `mesos-containerizer launch` share a lot of the logic. Command executor should in fact, just use `mesos-containerizer launch` to launch the user task. Potentially, `mesos-containerizer launch` can be also used by custom executor to launch user tasks.
Story points: 8