Extract some code in packages

- This will help split stuff in smaller, better tested packages
- This moves some stuff like the traefik command to package `cmd`

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

cmd/bug.go

@@ -1,114 +0,0 @@
-package cmd
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"net/url"
-	"os/exec"
-	"regexp"
-	"runtime"
-	"text/template"
-
-	"github.com/containous/flaeg"
-	"github.com/mvdan/xurls"
-)
-
-var (
-	bugtracker  = "https://github.com/containous/traefik/issues/new"
-	bugTemplate = `### What version of Traefik are you using?
-` + "```" + `
-{{.Version}}
-` + "```" + `
-
-### What is your environment & configuration (arguments, toml...)?
-` + "```" + `
-{{.Configuration}}
-` + "```" + `
-
-### What did you do?
-
-
-### What did you expect to see?
-
-
-### What did you see instead?
-
-
-### If applicable, please paste the log output in debug mode ('--debug' switch)
-`
-)
-
-// NewBugCmd builds a new Bug command
-func NewBugCmd(traefikConfiguration interface{}, traefikPointersConfiguration interface{}) *flaeg.Command {
-
-	//version Command init
-	return &flaeg.Command{
-		Name:                  "bug",
-		Description:           `Report an issue on Traefik bugtracker`,
-		Config:                traefikConfiguration,
-		DefaultPointersConfig: traefikPointersConfiguration,
-		Run: func() error {
-			var version bytes.Buffer
-			if err := getVersionPrint(&version); err != nil {
-				return err
-			}
-
-			tmpl, err := template.New("").Parse(bugTemplate)
-			if err != nil {
-				return err
-			}
-
-			configJSON, err := json.MarshalIndent(traefikConfiguration, "", " ")
-			if err != nil {
-				return err
-			}
-
-			v := struct {
-				Version       string
-				Configuration string
-			}{
-				Version:       version.String(),
-				Configuration: anonymize(string(configJSON)),
-			}
-
-			var bug bytes.Buffer
-			if err := tmpl.Execute(&bug, v); err != nil {
-				return err
-			}
-
-			body := bug.String()
-			url := bugtracker + "?body=" + url.QueryEscape(body)
-			if err := openBrowser(url); err != nil {
-				fmt.Print("Please file a new issue at " + bugtracker + " using this template:\n\n")
-				fmt.Print(body)
-			}
-
-			return nil
-		},
-		Metadata: map[string]string{
-			"parseAllSources": "true",
-		},
-	}
-}
-
-func openBrowser(url string) error {
-	var err error
-	switch runtime.GOOS {
-	case "linux":
-		err = exec.Command("xdg-open", url).Start()
-	case "windows":
-		err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
-	case "darwin":
-		err = exec.Command("open", url).Start()
-	default:
-		err = fmt.Errorf("unsupported platform")
-	}
-	return err
-}
-
-func anonymize(input string) string {
-	replace := "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
-	mailExp := regexp.MustCompile(`\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3}"`)
-	return xurls.Relaxed.ReplaceAllString(mailExp.ReplaceAllString(input, replace), replace)
-}