Update behat utils.

Fix dumps/sync directory to be pre-created.

Add missing gitconfig.

Fix update init dump script to work correctly.

Merge pull request drunomics#4 from drunomics/feature/WV-2556

Feature/wv 2556

Add amazeeio lagoon environment detection.

Improve files directory layout so files are stored all in a persisten…

…t files directory.

Fix loading settings per environment type.

Add support for grouping environments using the group.name notation a…

…nd loading dotenv files with the group name.

Remove the merge plugin, which is contained in drupal/core anyway.