allow rkq.Enqueue() in fbo.Rekey() (#715)
allow rkq.Enqueue() in fbo.Rekey() (#715)


keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client