fix Context issue

Signed-off-by: Shawn Chen <chen8132@gmail.com>

vendor/github.com/denverdino/aliyungo/util/util.go

@@ -4,13 +4,13 @@ import (
 	"bytes"
 	srand "crypto/rand"
 	"encoding/binary"
+	"encoding/json"
+	"fmt"
 	"math/rand"
 	"net/http"
 	"net/url"
 	"sort"
 	"time"
-	"fmt"
-	"encoding/json"
 )
 
 const dictionary = "_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
@@ -66,6 +66,34 @@ func Encode(v url.Values) string {
 	return buf.String()
 }
 
+// Like Encode, but key and value are not escaped
+func EncodeWithoutEscape(v url.Values) string {
+	if v == nil {
+		return ""
+	}
+	var buf bytes.Buffer
+	keys := make([]string, 0, len(v))
+	for k := range v {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		vs := v[k]
+		prefix := k
+		for _, v := range vs {
+			if buf.Len() > 0 {
+				buf.WriteByte('&')
+			}
+			buf.WriteString(prefix)
+			if v != "" {
+				buf.WriteString("=")
+				buf.WriteString(v)
+			}
+		}
+	}
+	return buf.String()
+}
+
 func GetGMTime() string {
 	return time.Now().UTC().Format(http.TimeFormat)
 }
@@ -148,11 +176,10 @@ func GenerateRandomECSPassword() string {
 
 }
 
-
 func PrettyJson(object interface{}) string {
-	b,err := json.MarshalIndent(object,"", "    ")
+	b, err := json.MarshalIndent(object, "", "    ")
 	if err != nil {
-		fmt.Printf("ERROR: PrettyJson, %v\n %s\n",err,b)
+		fmt.Printf("ERROR: PrettyJson, %v\n %s\n", err, b)
 	}
 	return string(b)
-}
+}