Add plan subcommand group frame

Change-Id: Ie90b88ed47fb0050b874eecadafeef3d3fc5f3b1
Relates-To: #395
Relates-To: #385

cmd/plan/list.go

@@ -0,0 +1,41 @@
+/*
+ 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
+
+     https://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 plan
+
+import (
+	"github.com/spf13/cobra"
+
+	"opendev.org/airship/airshipctl/pkg/config"
+	"opendev.org/airship/airshipctl/pkg/errors"
+)
+
+const (
+	listLong = `
+List life-cycle plans which were defined in document model.
+`
+)
+
+// NewListCommand creates a command which prints available phase plans
+func NewListCommand(cfgFactory config.Factory) *cobra.Command {
+	listCmd := &cobra.Command{
+		Use:   "list",
+		Short: "List plans",
+		Long:  listLong[1:],
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return errors.ErrNotImplemented{What: "airshipctl plan list"}
+		},
+	}
+	return listCmd
+}