feat: support baggage propagation in httpc (#2375)

* feat: support baggage propagation in httpc

* chore: use go 1.16

* chore: use go 1.16

* chore: use go ^1.16

* chore: remove deprecated

rest/handler/cryptionhandler.go

@@ -6,7 +6,6 @@ import (
 	"encoding/base64"
 	"errors"
 	"io"
-	"io/ioutil"
 	"net"
 	"net/http"
 
@@ -51,7 +50,7 @@ func decryptBody(key []byte, r *http.Request) error {
 		content = make([]byte, r.ContentLength)
 		_, err = io.ReadFull(r.Body, content)
 	} else {
-		content, err = ioutil.ReadAll(io.LimitReader(r.Body, maxBytes))
+		content, err = io.ReadAll(io.LimitReader(r.Body, maxBytes))
 	}
 	if err != nil {
 		return err
@@ -69,7 +68,7 @@ func decryptBody(key []byte, r *http.Request) error {
 
 	var buf bytes.Buffer
 	buf.Write(output)
-	r.Body = ioutil.NopCloser(&buf)
+	r.Body = io.NopCloser(&buf)
 
 	return nil
 }