'Retry' annotation

[dlecocq]

We should be able to mark up methods with a set of expected transient failures which are automatically retried. This mechanism is supported in qless-py and is very convenient. It would look something like this:

class MyJobClass {
  @Retry({IOException, TransientFailureException, SometimesBlowsUpException})
  public void process(final Job job) {
    ...
  }
}

[b4hand]

The java syntax will require you to pass a class literal like so:

@Retry({IOException.class, TransientFailureException.class, SometimesBlowsUpException.class})