Update saucy with new image (since old image was created before official saucy release)

library/ubuntu

@@ -8,5 +8,5 @@ quantal: git://github.com/tianon/docker-brew-ubuntu@c4e5dee217efe78bb773223b9f4a
 raring: git://github.com/tianon/docker-brew-ubuntu@80e86d8bb6ff135805de6f1f56d3998b9aabe1ff
 13.04: git://github.com/tianon/docker-brew-ubuntu@80e86d8bb6ff135805de6f1f56d3998b9aabe1ff
 
-saucy: git://github.com/tianon/docker-brew-ubuntu@c8ba2f1f5883b528a92cfa705e670dea8ddeaf0d
-13.10: git://github.com/tianon/docker-brew-ubuntu@c8ba2f1f5883b528a92cfa705e670dea8ddeaf0d
+saucy: git://github.com/tianon/docker-brew-ubuntu@f66fc3e7496312aaeff35f894897246a54bf709e
+13.10: git://github.com/tianon/docker-brew-ubuntu@f66fc3e7496312aaeff35f894897246a54bf709e