Add number of nodes for cluster in minikube profile list

fixes \#6780
Add the Nodes column with the number of nodes the cluster has into
`minikube profile list` output.

cmd/minikube/cmd/config/profile_list.go

@@ -130,7 +130,7 @@ func profileStatus(p *config.Profile, api libmachine.API) string {
 
 func renderProfilesTable(ps [][]string) {
 	table := tablewriter.NewWriter(os.Stdout)
-	table.SetHeader([]string{"Profile", "VM Driver", "Runtime", "IP", "Port", "Version", "Status"})
+	table.SetHeader([]string{"Profile", "VM Driver", "Runtime", "IP", "Port", "Version", "Status", "Nodes"})
 	table.SetAutoFormatHeaders(false)
 	table.SetBorders(tablewriter.Border{Left: true, Top: true, Right: true, Bottom: true})
 	table.SetCenterSeparator("|")
@@ -146,7 +146,7 @@ func profilesToTableData(profiles []*config.Profile) [][]string {
 			exit.Error(reason.GuestCpConfig, "error getting primary control plane", err)
 		}
 
-		data = append(data, []string{p.Name, p.Config.Driver, p.Config.KubernetesConfig.ContainerRuntime, cp.IP, strconv.Itoa(cp.Port), p.Config.KubernetesConfig.KubernetesVersion, p.Status})
+		data = append(data, []string{p.Name, p.Config.Driver, p.Config.KubernetesConfig.ContainerRuntime, cp.IP, strconv.Itoa(cp.Port), p.Config.KubernetesConfig.KubernetesVersion, p.Status, strconv.Itoa(len(p.Config.Nodes))})
 	}
 	return data
 }