add some better menu touches, make upgrade also upgrade to the menu, and add a ros config syslinux cmd for editing the global.cfg

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

cmd/control/config.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"io/ioutil"
 	"os"
+	"os/exec"
 	"sort"
 	"strings"
 	"text/template"
@@ -76,6 +77,11 @@ func configSubcommands() []cli.Command {
 				},
 			},
 		},
+		{
+			Name:   "syslinux",
+			Usage:  "edit Syslinux boot global.cfg",
+			Action: editSyslinux,
+		},
 		{
 			Name:   "validate",
 			Usage:  "validate configuration from stdin",
@@ -146,6 +152,21 @@ func env2map(env []string) map[string]string {
 	return m
 }
 
+func editSyslinux(c *cli.Context) error {
+	cmd := exec.Command("system-docker", "run", "--rm", "-it",
+		"-v", "/:/host",
+		"-w", "/host",
+		"--entrypoint=vi",
+		"rancher/os-console:"+config.Version,
+		"boot/global.cfg")
+	cmd.Stdout, cmd.Stderr, cmd.Stdin = os.Stdout, os.Stderr, os.Stdin
+	if err := cmd.Run(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func configSet(c *cli.Context) error {
 	if c.NArg() < 2 {
 		return nil