Includes the following changes since last vendoring: docker/swarmkit#2795 - Add capabilities list to container specification docker/swarmkit#2845 - Fix linting error docker/swarmkit#2848 - Bump fernet/fernet-go docker/swarmkit#2856 - Add ListServiceStatuses grpc method docker/swarmkit#2857 - Use Service Placement Constraints in Enforcer Signed-off-by: Drew Erny <drew.erny@docker.com>
