Fix environment_variables name (pterodactyl#1212)

Author: SergZy

CHANGELOG.md

@@ -12,6 +12,7 @@ This project follows [Semantic Versioning](http://semver.org) guidelines.
 * Hitting Ctrl+Z when editing a file on the web now works as expected.
 * Logo now links to the correct location on all pages.
 * Permissions checking to determine if a user can see the task management page now works correctly.
+* Fixed `pterodactyl.environment_variables` to be used correctly for global environment variables. The wrong config variable name was being using previously.
 
 ### Changed
 * Attempting to upload a folder via the web file manager will now display a warning telling the user to use SFTP.

app/Services/Servers/EnvironmentService.php

@@ -78,7 +78,7 @@ public function handle(Server $server): array
         }
 
         // Process variables set in the configuration file.
-        foreach ($this->config->get('pterodactyl.environment_mappings', []) as $key => $object) {
+        foreach ($this->config->get('pterodactyl.environment_variables', []) as $key => $object) {
             if (is_callable($object)) {
                 $variables[$key] = call_user_func($object, $server);
             } else {

tests/Unit/Services/Servers/EnvironmentServiceTest.php

@@ -12,7 +12,7 @@
 
 class EnvironmentServiceTest extends TestCase
 {
-    const CONFIG_MAPPING = 'pterodactyl.environment_mappings';
+    const CONFIG_MAPPING = 'pterodactyl.environment_variables';
 
     /**
      * @var \Illuminate\Contracts\Config\Repository|\Mockery\Mock