fix name error: global name `self` does not exist
fix name error: global name `self` does not exist

rackspace/pyrax,vikomall/pyrax,ddaeschler/pyrax,mandx/pyrax,sivel/pyrax,naemono/pyrax,emonty/pyos,opsdisk/pyrax,briancurtin/pyrax,0dataloss/pyrax,pratikmallya/pyrax,rackerlabs/heat-pyrax,EdLeafe/pyrax,roelvv/pyrax