Change os.errno to errno for py3.7 compatibility
Change os.errno to errno for py3.7 compatibility

Signed-off-by: Simon Gurcke <088e16a1019277b15d58faf0541e11910eb756f6@gurcke.de>

docker/docker-py,docker/docker-py,vdemeester/docker-py,funkyfuture/docker-py,funkyfuture/docker-py,vdemeester/docker-py