text: Title: Export asklearn2 predictions to improve start up time
  Body: We currently [fit](https://github.com/automl/auto-sklearn/blob/master/autosklearn/experimental/askl2.py#L57) and predict upon loading `autosklearn.experimental.askl2` for the first time. In environments with a non-persistent filesystem (autosklearn is installed into a new filesystem each time), this can add quite a bit of time delay as experienced in #1362
  
  It seems more applicable to export the predictions with the library to save on this time.