new queues added to cloudmesh_celery.yaml
refreshing flavors is now done by Celery task queue. For example, http://[ipaddress:port]/cm/refresh/q/aws/images calls refreshing images of aws which has 29282 registered images. The original refresh function of aws images takes 42 seconds of listing images, 8.8 seconds of storing them to mongo db which is the total runtime is about 50 seconds. To apply refreshing images by Celery Task Queue is simply adding '/q/' in the url after './refresh/' in template pages.