pass environment filter config to agent

Author: jblotus

config/elastic-apm.php

@@ -12,6 +12,12 @@
         'appVersion'    => '',
     ],
 
+    'env' => [
+        // whitelist environment variables OR send everything
+        'env' => ['DOCUMENT_ROOT', 'REMOTE_ADDR']
+        //'env' => []
+    ],
+
     'server' => [
         // The apm-server to connect to
         'serverUrl'     => 'http://127.0.0.1:8200',

src/Providers/ElasticApmServiceProvider.php

@@ -45,6 +45,7 @@ public function register()
                         'frameworkVersion' => app()->version(),
                     ],
                     config('elastic-apm.app'),
+                    config('elastic-apm.env'),
                     config('elastic-apm.server')
                 )
             );