[v3.2] Add grafana dashboard importing API (#11)

* Add API to import grafana templates to kubesphere dashboard
* Merge and fix the latest codes from kubesphere #2501

Signed-off-by: zhu733756 <talonzhu@yunify.com>

vendor/github.com/gosimple/slug/doc.go

@@ -0,0 +1,43 @@
+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/*
+Package slug generate slug from unicode string, URL-friendly slugify with
+multiple languages support.
+
+Example:
+
+	package main
+
+	import(
+		"github.com/gosimple/slug"
+		"fmt"
+	)
+
+	func main () {
+		text := slug.Make("Hellö Wörld хелло ворлд")
+		fmt.Println(text) // Will print hello-world-khello-vorld
+
+		someText := slug.Make("影師")
+		fmt.Println(someText) // Will print: ying-shi
+
+		enText := slug.MakeLang("This & that", "en")
+		fmt.Println(enText) // Will print 'this-and-that'
+
+		deText := slug.MakeLang("Diese & Dass", "de")
+		fmt.Println(deText) // Will print 'diese-und-dass'
+
+		slug.CustomSub = map[string]string{
+			"water": "sand",
+		}
+		textSub := slug.Make("water is hot")
+		fmt.Println(textSub) // Will print 'sand-is-hot'
+	}
+
+Requests or bugs?
+
+https://github.com/gosimple/slug/issues
+*/
+package slug