to ensure azure service api is responsive, we added waiting time after launching new instance. It seems that azure-sdk-for-ptyhon spits errors if we call it quickly after a request
updated the refresh function. /cm/refresh/[cloud]/[service_type] is a URI to do a refresh. For example, however, /cm/refresh/images will refresh all of images, servers, flavors because of missing [cloud]. To avoid this, Redundant [cloud] name is specified in the URI. The refresh function in webui/modules/cloud.py will refresh all images for active clouds, if /cm/refresh/images/images is called.