cmd/juju: working bootstrap and destroy commands

cmd/jujud/main.go

 package main
 
 import (
         "launchpad.net/juju/go/cmd"
         "os"
 )
 
 var jujudDoc = `
 juju provides easy, intelligent service orchestration on top of environments
 such as OpenStack, Amazon AWS, or bare metal. jujud is a component of juju.
 
 https://juju.ubuntu.com/
 `
 
 // Main registers subcommands for the jujud executable, and hands over control
 // to the cmd package. This function is not redundant with main, because it
 // provides an entry point for testing with arbitrary command line arguments.
 func Main(args []string) {
-        jc := cmd.NewSuperCommand("jujud", jujudDoc)
-        jc.Register(&InitzkCommand{})
-        jc.Register(NewUnitAgent())
-        jc.Register(NewMachineAgent())
-        jc.Register(NewProvisioningAgent())
-        cmd.Main(jc, args)
+        jujud := cmd.NewSuperCommand("jujud", "", jujudDoc)
+        jujud.Register(&InitzkCommand{})
+        jujud.Register(NewUnitAgent())
+        jujud.Register(NewMachineAgent())
+        jujud.Register(NewProvisioningAgent())
+        os.Exit(cmd.Main(jujud, cmd.DefaultContext(), args[1:]))
 }
 
 func main() {
         Main(os.Args)
 }