fix virtualenv lock files issue again
fix virtualenv lock files issue again

Plexxi/st2,Plexxi/st2,nzlosh/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,nzlosh/st2