remove more code

pkg/drivers/kic/node/spec.go

-/*
-Copyright 2019 The Kubernetes Authors All rights reserved.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package node
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"os/exec"
-	"strings"
-
-	"github.com/pkg/errors"
-	"k8s.io/minikube/pkg/drivers/kic/oci"
-)
-
-// Spec describes a node to create purely from the container aspect
-// this does not inlude eg starting kubernetes (see actions for that)
-type Spec struct {
-	Name              string
-	Profile           string
-	Role              string
-	Image             string // for example  4000mb based on https://docs.docker.com/config/containers/resource_constraints/
-	CPUs              string // for example 2
-	Memory            string
-	ExtraMounts       []oci.Mount
-	ExtraPortMappings []oci.PortMapping
-	APIServerPort     int32
-	APIServerAddress  string
-	IPv6              bool
-	Envs              map[string]string // environment variables to be passsed to passed to create nodes
-}
-
-// ListNodes lists all the nodes (containers) created by kic on the system
-func (d *Spec) ListNodes() ([]string, error) {
-	args := []string{
-		"ps",
-		"-q",         // quiet output for parsing
-		"-a",         // show stopped nodes
-		"--no-trunc", // don't truncate
-		// filter for nodes with the cluster label
-		"--filter", "label=" + ClusterLabelKey,
-		// format to include friendly name and the cluster name
-		"--format", fmt.Sprintf(`{{.Names}}\t{{.Label "%s"}}`, ClusterLabelKey),
-	}
-	cmd := exec.Command("docker", args...)
-
-	var buff bytes.Buffer
-	cmd.Stdout = &buff
-	cmd.Stderr = &buff
-	err := cmd.Run()
-	if err != nil {
-		return nil, errors.Wrap(err, fmt.Sprintf("failed to list containers for %s", d.Profile))
-
-	}
-
-	lines := []string{}
-	scanner := bufio.NewScanner(&buff)
-	for scanner.Scan() {
-		lines = append(lines, scanner.Text())
-	}
-
-	names := []string{}
-	for _, line := range lines {
-		parts := strings.Split(line, "\t")
-		if len(parts) != 2 {
-			return nil, errors.Errorf("invalid output when listing containers: %s", line)
-
-		}
-		ns := strings.Split(parts[0], ",")
-		names = append(names, ns...)
-	}
-	return names, nil
-
-}