remove any go mod changes

This reverts commit 6c7f7d6887.

weed/remote_storage/s3/contabo.go

@@ -0,0 +1,50 @@
+package s3
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
+	"github.com/chrislusf/seaweedfs/weed/remote_storage"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+func init() {
+	remote_storage.RemoteStorageClientMakers["contabo"] = new(ContaboRemoteStorageMaker)
+}
+
+type ContaboRemoteStorageMaker struct{}
+
+func (s ContaboRemoteStorageMaker) HasBucket() bool {
+	return true
+}
+
+func (s ContaboRemoteStorageMaker) Make(conf *remote_pb.RemoteConf) (remote_storage.RemoteStorageClient, error) {
+	client := &s3RemoteStorageClient{
+		conf: conf,
+	}
+	accessKey := util.Nvl(conf.ContaboAccessKey, os.Getenv("ACCESS_KEY"))
+	secretKey := util.Nvl(conf.ContaboSecretKey, os.Getenv("SECRET_KEY"))
+
+	config := &aws.Config{
+		Endpoint:                      aws.String(conf.ContaboEndpoint),
+		Region:                        aws.String(conf.ContaboRegion),
+		S3ForcePathStyle:              aws.Bool(true),
+		S3DisableContentMD5Validation: aws.Bool(true),
+	}
+	if accessKey != "" && secretKey != "" {
+		config.Credentials = credentials.NewStaticCredentials(accessKey, secretKey, "")
+	}
+
+	sess, err := session.NewSession(config)
+	if err != nil {
+		return nil, fmt.Errorf("create contabo session: %v", err)
+	}
+	sess.Handlers.Build.PushFront(skipSha256PayloadSigning)
+	client.conn = s3.New(sess)
+	return client, nil
+}