Move Behat related requirements into its own plugin

composer.json

@@ -29,18 +29,11 @@
         "source": "https://gitlab.lakedrops.com/composer/plugin/drupal-8-scaffold-developer/tree/master"
     },
     "require": {
-        "behat/behat": "^3.5",
-        "behat/mink": "^1.7",
-        "behat/mink-goutte-driver": "^1.2",
-        "behat/mink-selenium2-driver": "^1.3",
-        "behat/web-api-extension": "^1.0@dev",
         "composer-plugin-api": "^1.0.0",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.4.3",
         "drupal-code-builder/drupal-code-builder-drush": "^9.0",
         "drupal/coder": "^8.2",
-        "drupal/drupal-extension": "^3.4",
-        "jcalderonzumba/gastonjs": "^1.2",
-        "jcalderonzumba/mink-phantomjs-driver": "^0.3",
+        "lakedrops/behat4drupal": "^1.0.0",
         "lakedrops/composer-scripts": "^1.0.0",
         "lakedrops/docker4drupal": "^1.0.0",
         "lakedrops/dorgflow": "^1.0.0",