update retry plugin backoff default to be more sensible

Author: bendavies

src/Plugin/RetryPlugin.php

@@ -117,6 +117,6 @@ public function handleRequest(RequestInterface $request, callable $next, callabl
      */
     public static function defaultDelay(RequestInterface $request, Exception $e, $retries)
     {
-        return pow(2, $retries) * 1000;
+        return pow(2, $retries) * 1000 * 100;
     }
 }