config: add context.Context #3257 #4685

This add config to the Config callback in the backends and the related
config functions.

backend/putio/putio.go

@@ -1,6 +1,7 @@
 package putio
 
 import (
+	"context"
 	"log"
 	"regexp"
 	"time"
@@ -59,11 +60,11 @@ func init() {
 		Name:        "putio",
 		Description: "Put.io",
 		NewFs:       NewFs,
-		Config: func(name string, m configmap.Mapper) {
+		Config: func(ctx context.Context, name string, m configmap.Mapper) {
 			opt := oauthutil.Options{
 				NoOffline: true,
 			}
-			err := oauthutil.Config("putio", name, m, putioConfig, &opt)
+			err := oauthutil.Config(ctx, "putio", name, m, putioConfig, &opt)
 			if err != nil {
 				log.Fatalf("Failed to configure token: %v", err)
 			}