Upgrade AWS SDK to the latest version

vendor/github.com/aws/aws-sdk-go/service/dynamodb/customizations.go

@@ -26,19 +26,30 @@ func (d retryer) RetryRules(r *request.Request) time.Duration {
 
 func init() {
 	initClient = func(c *client.Client) {
-		r := retryer{}
-		if c.Config.MaxRetries == nil || aws.IntValue(c.Config.MaxRetries) == aws.UseServiceDefaultRetries {
-			r.NumMaxRetries = 10
-		} else {
-			r.NumMaxRetries = *c.Config.MaxRetries
+		if c.Config.Retryer == nil {
+			// Only override the retryer with a custom one if the config
+			// does not already contain a retryer
+			setCustomRetryer(c)
 		}
-		c.Retryer = r
 
 		c.Handlers.Build.PushBack(disableCompression)
 		c.Handlers.Unmarshal.PushFront(validateCRC32)
 	}
 }
 
+func setCustomRetryer(c *client.Client) {
+	maxRetries := aws.IntValue(c.Config.MaxRetries)
+	if c.Config.MaxRetries == nil || maxRetries == aws.UseServiceDefaultRetries {
+		maxRetries = 10
+	}
+
+	c.Retryer = retryer{
+		DefaultRetryer: client.DefaultRetryer{
+			NumMaxRetries: maxRetries,
+		},
+	}
+}
+
 func drainBody(b io.ReadCloser, length int64) (out *bytes.Buffer, err error) {
 	if length < 0 {
 		length = 0