Merge pull request #4735 from vemcogroup/master

Extract 2 core configurations for sessions to environment

config/session.php

@@ -70,7 +70,7 @@ return [
     |
     */
 
-    'connection' => null,
+    'connection' => env('SESSION_CONNECTION', null),
 
     /*
     |--------------------------------------------------------------------------
@@ -96,7 +96,7 @@ return [
     |
     */
 
-    'store' => null,
+    'store' => env('SESSION_STORE', null),
 
     /*
     |--------------------------------------------------------------------------