cmd/juju: working bootstrap and destroy commands

cmd/juju/main.go

 package main
 
 import (
         "launchpad.net/juju/go/cmd"
         "os"
 )
 
 // Environment types to include.
 import (
         _ "launchpad.net/juju/go/environs/ec2"
 )
 
 var jujuDoc = `
 juju provides easy, intelligent service orchestration on top of environments
 such as OpenStack, Amazon AWS, or bare metal.
 
 https://juju.ubuntu.com/
 `
 
 // Main registers subcommands for the juju 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("juju", jujuDoc)
-        jc.Register(&BootstrapCommand{})
-        jc.Register(&DestroyCommand{})
-        cmd.Main(jc, args)
+        juju := cmd.NewSuperCommand("juju", "", jujuDoc)
+        juju.Register(&BootstrapCommand{})
+        juju.Register(&DestroyCommand{})
+        os.Exit(cmd.Main(juju, cmd.DefaultContext(), args[1:]))
 }
 
 func main() {
         Main(os.Args)
 }