message: [storage] trivial: enlarges timeout in `Pruner::wake_and_wait()` (tests only)
  Occationally this times out after code is just built.
  Closes:
  Approved by: wqfish
diff: @@ -91,7 +91,8 @@ impl Pruner {
  if latest_version > self.num_historical_versions_to_keep {
  let least_readable_version = latest_version - self.num_historical_versions_to_keep;
  - const TIMEOUT: Duration = Duration::from_millis(100);
  + // Assuming no big pruning chunks will be issued by a test.
  + const TIMEOUT: Duration = Duration::from_secs(10);
  let end = Instant::now() + TIMEOUT;
  while Instant::now() < end {
  