Evgenia Badiyanova

Thank you so much for the changes! Does it make sense to update [command line reference](https://github.com/elastic/rally/blob/master/docs/command_line_reference.rst) to include the new option to increase the batch size? And update the [create...

tested with regular index and data streams. I think once we have updated docs it's good to go! One interesting thing for data-streams scenario: we create a regular index in...