Update vendor

vendor/github.com/mudler/cobra-extensions/interface.go

@@ -0,0 +1,26 @@
+// Copyright © 2020 Ettore Di Giacinto
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package extensions
+
+import "github.com/spf13/cobra"
+
+type ExtensionInterface interface {
+	String() string
+	Path() string
+	Short() string
+	CobraCommand() *cobra.Command
+	Exec(args []string) error
+}