Convert .env file to env.php to mask critical info

modules/Installer/Config/config.php

@@ -5,7 +5,7 @@ return [
         'version' => '7.0.0'
     ],
 
-    'env_postfix' => '',
+    'env_filename' => 'env.php',
 
     'extensions' => [
         'openssl',

modules/Installer/Services/EnvironmentService.php

@@ -86,8 +86,8 @@ class EnvironmentService
      */
     protected function writeEnvFile($opts)
     {
-        $env_file = \App::environmentFilePath();
-        $env_file .= config('installer.env_postfix');
+        $env_file = \App::environmentPath();
+        $env_file .= config('installer.env_filename');
 
         # render it within Blade and log the contents
         $env_contents = view('installer::stubs/env', $opts);