Add support for kubernetes in docker cli

- Add support for kubernetes for docker stack command
- Update to go 1.9
- Add kubernetes to vendors
- Print orchestrator in docker version command

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

cli/command/stack/list.go

@@ -1,96 +0,0 @@
-package stack
-
-import (
-	"sort"
-
-	"github.com/docker/cli/cli"
-	"github.com/docker/cli/cli/command"
-	"github.com/docker/cli/cli/command/formatter"
-	"github.com/docker/cli/cli/compose/convert"
-	"github.com/docker/docker/api/types"
-	"github.com/docker/docker/client"
-	"github.com/pkg/errors"
-	"github.com/spf13/cobra"
-	"golang.org/x/net/context"
-	"vbom.ml/util/sortorder"
-)
-
-type listOptions struct {
-	format string
-}
-
-func newListCommand(dockerCli command.Cli) *cobra.Command {
-	opts := listOptions{}
-
-	cmd := &cobra.Command{
-		Use:     "ls",
-		Aliases: []string{"list"},
-		Short:   "List stacks",
-		Args:    cli.NoArgs,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			return runList(dockerCli, opts)
-		},
-	}
-
-	flags := cmd.Flags()
-	flags.StringVar(&opts.format, "format", "", "Pretty-print stacks using a Go template")
-	return cmd
-}
-
-func runList(dockerCli command.Cli, opts listOptions) error {
-	client := dockerCli.Client()
-	ctx := context.Background()
-
-	stacks, err := getStacks(ctx, client)
-	if err != nil {
-		return err
-	}
-	format := opts.format
-	if len(format) == 0 {
-		format = formatter.TableFormatKey
-	}
-	stackCtx := formatter.Context{
-		Output: dockerCli.Out(),
-		Format: formatter.NewStackFormat(format),
-	}
-	sort.Sort(byName(stacks))
-	return formatter.StackWrite(stackCtx, stacks)
-}
-
-type byName []*formatter.Stack
-
-func (n byName) Len() int           { return len(n) }
-func (n byName) Swap(i, j int)      { n[i], n[j] = n[j], n[i] }
-func (n byName) Less(i, j int) bool { return sortorder.NaturalLess(n[i].Name, n[j].Name) }
-
-func getStacks(ctx context.Context, apiclient client.APIClient) ([]*formatter.Stack, error) {
-	services, err := apiclient.ServiceList(
-		ctx,
-		types.ServiceListOptions{Filters: getAllStacksFilter()})
-	if err != nil {
-		return nil, err
-	}
-	m := make(map[string]*formatter.Stack)
-	for _, service := range services {
-		labels := service.Spec.Labels
-		name, ok := labels[convert.LabelNamespace]
-		if !ok {
-			return nil, errors.Errorf("cannot get label %s for service %s",
-				convert.LabelNamespace, service.ID)
-		}
-		ztack, ok := m[name]
-		if !ok {
-			m[name] = &formatter.Stack{
-				Name:     name,
-				Services: 1,
-			}
-		} else {
-			ztack.Services++
-		}
-	}
-	var stacks []*formatter.Stack
-	for _, stack := range m {
-		stacks = append(stacks, stack)
-	}
-	return stacks, nil
-}