fix: k8s dependency version: emicklei/go-restful

`emicklei/go-restful` is used by:
- `k8s.io/client-go`  (Godeps)

Refs:
- e121606b0d/Godeps/Godeps.json

vendor/github.com/emicklei/go-restful/jsr311.go

@@ -74,7 +74,7 @@ func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*R
 	// accept
 	outputMediaOk := []Route{}
 	accept := httpRequest.Header.Get(HEADER_Accept)
-	if accept == "" {
+	if len(accept) == 0 {
 		accept = "*/*"
 	}
 	for _, each := range inputMediaOk {
@@ -88,7 +88,8 @@ func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*R
 		}
 		return nil, NewError(http.StatusNotAcceptable, "406: Not Acceptable")
 	}
-	return r.bestMatchByMedia(outputMediaOk, contentType, accept), nil
+	// return r.bestMatchByMedia(outputMediaOk, contentType, accept), nil
+	return &outputMediaOk[0], nil
 }
 
 // http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2