state: Life no longer depends on apiserver/params

`state.Life` is a small integer, however it relies on params.State for its string representation. Apart from the coupling, this is nuts because common/life.go doesn't check the results of `state.Life.String()`, it just converts it to a `params.Life` and stuffs it back to the client.
Merge pull request #753 from davecheney/200-state-life-does-not-depend-on-apiserver-params

state: Life no longer depends on apiserver/params

`state.Life` is a small integer, however it relies on params.State for its string representation. Apart from the coupling, this is nuts because common/life.go doesn't check the results of `state.Life.String()`, it just converts it to a `params.Life` and stuffs it back to the client.