make sure the LB sandbox is removed when a service is updated with a --network-rm option Signed-off-by: Arko Dasgupta <arko.dasgupta@docker.com> (cherry picked from commit 680d0ba4abfb00c8ac959638c72003dba0826b46) Signed-off-by: Sebastiaan van Stijn <github@gone.nl> Upstream-commit: 280b8dff7df137dd21fcf27cacf6d12ed531770a Component: engine