cmd/juju: working bootstrap and destroy commands

cmd/jujud/provisioning.go

 package main
 
-import "fmt"
+import (
+        "fmt"
+        "launchpad.net/juju/go/cmd"
+)
 
 // ProvisioningAgent is a cmd.Command responsible for running a provisioning agent.
 type ProvisioningAgent struct {
         agentConf
 }
 
 func NewProvisioningAgent() *ProvisioningAgent {
         return &ProvisioningAgent{agentConf: agentConf{name: "provisioning"}}
 }
 
 // Run runs a provisioning agent.
-func (a *ProvisioningAgent) Run() error {
+func (a *ProvisioningAgent) Run(_ *cmd.Context) error {
         return fmt.Errorf("MachineAgent.Run not implemented")
 }