This commit revendor swarmkit to 7b202f058db2f3a7d41351a56e5ef720c9b5a45d to improve error message for removing pre-defined (e.g., `ingress`) network. This commit is related to 24538. Signed-off-by: Yong Tang <yong.tang.github@outlook.com> Upstream-commit: f4e94617f087fc19614858fe496314673ad3877d Component: engine