Fix: Add TTL and custom Timeout in DigitalOcean DNS provider

vendor/github.com/xenolf/lego/acme/utils.go

@@ -1,29 +0,0 @@
-package acme
-
-import (
-	"fmt"
-	"time"
-)
-
-// WaitFor polls the given function 'f', once every 'interval', up to 'timeout'.
-func WaitFor(timeout, interval time.Duration, f func() (bool, error)) error {
-	var lastErr string
-	timeup := time.After(timeout)
-	for {
-		select {
-		case <-timeup:
-			return fmt.Errorf("Time limit exceeded. Last error: %s", lastErr)
-		default:
-		}
-
-		stop, err := f()
-		if stop {
-			return nil
-		}
-		if err != nil {
-			lastErr = err.Error()
-		}
-
-		time.Sleep(interval)
-	}
-}