Pass id to all runc commands

[crosbymichael]

Remove the --id flag and start passing

runc start redis

where redis is the container's id

[mikebrow]

Did you start this one? I can pop out a PR for this if not. I was going to do it after bringing mrunal's merged config.json and runtime.json into runc. Cheers.

[crosbymichael]

no i have not