public function syncACS()
 {
     $acs = app('cloudstack');
     if (is_array($acs)) {
         return -1;
     }
     $offerings = $acs->listDiskOfferings();
     $tags = [];
     foreach ($offerings as $offering) {
         // Extract a list of tags
         if (!isset($offering->tags)) {
             continue;
         }
         if (!in_array($offering->tags, $tags)) {
             $tags[] = $offering->tags;
         }
     }
     foreach ($tags as $tag) {
         // Create a config price and a storage tag if they don't exist.
         StorageType::firstOrCreate(['tag' => $tag]);
         SiteConfig::firstOrCreate(['parameter' => $tag . 'Price']);
     }
     return 1;
 }