[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/README.md

@@ -0,0 +1,54 @@
+slug
+====
+
+Package `slug` generate slug from unicode string, URL-friendly slugify with
+multiple languages support.
+
+[![GoDoc](https://godoc.org/github.com/gosimple/slug?status.png)](https://godoc.org/github.com/gosimple/slug)
+[![Build Status](https://drone.io/github.com/gosimple/slug/status.png)](https://drone.io/github.com/gosimple/slug/latest)
+
+[Documentation online](http://godoc.org/github.com/gosimple/slug)
+
+## 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>
+
+## Installation
+
+	go get -u github.com/gosimple/slug
+
+## License
+
+The source files are distributed under the
+[Mozilla Public License, version 2.0](http://mozilla.org/MPL/2.0/),
+unless otherwise noted.
+Please read the [FAQ](http://www.mozilla.org/MPL/2.0/FAQ.html)
+if you have further questions regarding the license.