Run / Stop commands

[ryanuber]

This PR has the new run and stop commands, as well as the eval-monitor command. There is a small state monitor that we use in all of these commands to watch what Nomad does once the commands are issued. You can optionally detach immediately using the -detach option for run or stop.

I've included docs and tests for everything so far, all suggestions for the UX welcome.

[armon]

mapstructure maybe cleaner for this

[ryanuber]

I did look at mapstructure for this but it seemed like I still needed to first convert to a map[string]interface{}, then from that to the *api.Job. Maybe there's something I'm missing?

[armon]

@ryanuber Take a look here: http://godoc.org/github.com/mitchellh/mapstructure#Decode
It is interface{} to interface{}

[ryanuber]

Hmm... PHP mode isn't working.

package main

import "github.com/mitchellh/mapstructure"

type x struct {
    ID string
}

type y struct {
    ID string
}

func main() {
    in := &x{"hi"}
    out := new(y)
    if err := mapstructure.Decode(in, out); err != nil {
        println(err.Error())
        return
    }
}

$ go run test.go 
'' expected a map, got 'struct'

The reason I was thinking a map was required was because of these comments.

/cc @mitchellh

[armon]

Left some UX feedback, but LGTM

[ryanuber]

Great feedback, will get these addressed!

[armon]

BOOM

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