firmware: add plugin list if plugins are installed; closes #1563

(cherry picked from commit 1626ab87)

src/www/crash_reporter.php

 <?php
 
 /*
-    Copyright (C) 2015-2016 Franco Fichtner <franco@opnsense.org>
+    Copyright (C) 2015-2017 Franco Fichtner <franco@opnsense.org>
     Copyright (C) 2014 Deciso B.V.
     Copyright (C) 2011 Scott Ullrich
     All rights reserved.
@@ -61,15 +61,18 @@ function upload_crash_report($files, $agent)
 
 include('head.inc');
 
+$plugins = implode(' ',  explode("\n", shell_exec('pkg info -g "os-*"')));
+
 $last_version = '/usr/local/opnsense/version/opnsense.last';
 $crash_report_header = sprintf(
-    "%s\n%s %s%s %s (%s)\nTime %s\n",
+    "%s\n%s %s%s %s (%s)\n%sTime %s\n",
     php_uname('v'),
     $g['product_name'],
     trim(file_get_contents('/usr/local/opnsense/version/opnsense')),
     file_exists($last_version) ? sprintf(' [%s]', trim(file_get_contents($last_version))) : '',
     trim(shell_exec('/usr/local/bin/openssl version')),
     trim(shell_exec('uname -p')),
+    empty($plugins) ? '' : "Plugins $plugins\n",
     date('r')
 );