Remove async_ argument from any list_nodes call
Remove async_ argument from any list_nodes call

andrewsomething/libcloud,andrewsomething/libcloud,andrewsomething/libcloud,apache/libcloud,Kami/libcloud,mistio/libcloud,mistio/libcloud,apache/libcloud,Kami/libcloud,mistio/libcloud,apache/libcloud,Kami/libcloud