Before this patch behat_dataroot for parallel runs
were created at same level as ->behat_dataroot
After this patch, it will be created 1 level under
->behat_dataroot with BEHAT_PARALLEL_SITE_NAME
prefix and run number as suffix. This will allow
common files as test enabled and parallel run info
to be saved in parent directory and access it easily.
run.php should only be used for running behat
before this patch if tags were passed, then behat.yml
was being re-written with features havings tags.
As this is not ideal, this option is now removed and
features with tags will be optimally split
by init.php when --optimize-run option is passed
if theme/tests/behat/behat_theme_{THEME_NAME}_behat_selectors.php
file exits, and has class with same file name then we will
call behat_theme_{THEME_NAME}_behat_selectors::register_moodle_selectors()
to register theme specific selectors. If they are different
then core then they will override