Add create secret git command

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

cmd/flux/create_secret.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2020 The Flux authors
+
+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 main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/yaml"
+)
+
+var createSecretCmd = &cobra.Command{
+	Use:   "secret",
+	Short: "Create or update Kubernetes secrets",
+	Long:  "The create source sub-commands generate Kubernetes secrets specific to Flux.",
+}
+
+func init() {
+	createCmd.AddCommand(createSecretCmd)
+}
+
+func exportSecret(secret corev1.Secret) error {
+	secret.TypeMeta = metav1.TypeMeta{
+		APIVersion: "v1",
+		Kind:       "Secret",
+	}
+
+	data, err := yaml.Marshal(secret)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("---")
+	fmt.Println(resourceToString(data))
+	return nil
+}